diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index a92557977f85..6cac225fce51 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -1446,6 +1446,7 @@
 //#define EEPROM_SETTINGS     // Persistent storage with M500 and M501
 //#define DISABLE_M503        // Saves ~2700 bytes of PROGMEM. Disable for release!
 #define EEPROM_CHITCHAT       // Give feedback on EEPROM commands. Disable to save PROGMEM.
+#define EEPROM_BOOT_SILENT    // Keep M503 quiet and only give errors during first load
 #if ENABLED(EEPROM_SETTINGS)
   //#define EEPROM_AUTO_INIT  // Init EEPROM automatically on any errors.
 #endif
diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index f5d80a3eb3e8..6149864ab4fd 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -753,8 +753,12 @@
 // Minimum time that a segment needs to take if the buffer is emptied
 #define DEFAULT_MINSEGMENTTIME        20000   // (ms)
 
-// If defined the movements slow down when the look ahead buffer is only half full
+// Slow down the machine if the look ahead buffer is (by default) half full.
+// Increase the slowdown divisor for larger buffer sizes.
 #define SLOWDOWN
+#if ENABLED(SLOWDOWN)
+  #define SLOWDOWN_DIVISOR 2
+#endif
 
 // Frequency limit
 // See nophead's blog for more info
@@ -999,7 +1003,7 @@
   #define BOOTSCREEN_TIMEOUT 4000        // (ms) Total Duration to display the boot screen(s)
 #endif
 
-#if HAS_GRAPHICAL_LCD && HAS_PRINT_PROGRESS
+#if HAS_GRAPHICAL_LCD && EITHER(SDSUPPORT, LCD_SET_PROGRESS_MANUALLY)
   //#define PRINT_PROGRESS_SHOW_DECIMALS // Show progress with decimal digits
   //#define SHOW_REMAINING_TIME          // Display estimated time to completion
   #if ENABLED(SHOW_REMAINING_TIME)
@@ -1008,7 +1012,7 @@
   #endif
 #endif
 
-#if HAS_CHARACTER_LCD && HAS_PRINT_PROGRESS
+#if HAS_CHARACTER_LCD && EITHER(SDSUPPORT, LCD_SET_PROGRESS_MANUALLY)
   //#define LCD_PROGRESS_BAR              // Show a progress bar on HD44780 LCDs for SD printing
   #if ENABLED(LCD_PROGRESS_BAR)
     #define PROGRESS_BAR_BAR_TIME 2000    // (ms) Amount of time to show the bar
diff --git a/Marlin/src/HAL/DUE/inc/Conditionals_post.h b/Marlin/src/HAL/DUE/inc/Conditionals_post.h
index 223890d79016..b52462f6d891 100644
--- a/Marlin/src/HAL/DUE/inc/Conditionals_post.h
+++ b/Marlin/src/HAL/DUE/inc/Conditionals_post.h
@@ -24,5 +24,5 @@
 #if USE_EMULATED_EEPROM
   #undef SRAM_EEPROM_EMULATION
   #undef SDCARD_EEPROM_EMULATION
-  #define FLASH_EEPROM_EMULATION 1
+  #define FLASH_EEPROM_EMULATION
 #endif
diff --git a/Marlin/src/HAL/ESP32/inc/Conditionals_post.h b/Marlin/src/HAL/ESP32/inc/Conditionals_post.h
index 0285c52ee365..e51b55698e49 100644
--- a/Marlin/src/HAL/ESP32/inc/Conditionals_post.h
+++ b/Marlin/src/HAL/ESP32/inc/Conditionals_post.h
@@ -20,3 +20,8 @@
  *
  */
 #pragma once
+
+// If no real EEPROM, Flash emulation, or SRAM emulation is available fall back to SD emulation
+#if ENABLED(EEPROM_SETTINGS) && NONE(USE_REAL_EEPROM, FLASH_EEPROM_EMULATION, SRAM_EEPROM_EMULATION)
+  #define SDCARD_EEPROM_EMULATION
+#endif
diff --git a/Marlin/src/HAL/LPC1768/inc/Conditionals_post.h b/Marlin/src/HAL/LPC1768/inc/Conditionals_post.h
index 26371745431a..a8d102e865ae 100644
--- a/Marlin/src/HAL/LPC1768/inc/Conditionals_post.h
+++ b/Marlin/src/HAL/LPC1768/inc/Conditionals_post.h
@@ -21,10 +21,6 @@
  */
 #pragma once
 
-#if ENABLED(EEPROM_SETTINGS)
-  #undef USE_REAL_EEPROM
-  #define USE_EMULATED_EEPROM 1
-  #if DISABLED(FLASH_EEPROM_EMULATION)
-    #define SDCARD_EEPROM_EMULATION 1
-  #endif
+#if USE_EMULATED_EEPROM && NONE(SDCARD_EEPROM_EMULATION, SRAM_EEPROM_EMULATION)
+  #define FLASH_EEPROM_EMULATION
 #endif
diff --git a/Marlin/src/HAL/LPC1768/persistent_store_flash.cpp b/Marlin/src/HAL/LPC1768/persistent_store_flash.cpp
index 5525f818a046..e166858d6460 100644
--- a/Marlin/src/HAL/LPC1768/persistent_store_flash.cpp
+++ b/Marlin/src/HAL/LPC1768/persistent_store_flash.cpp
@@ -36,12 +36,11 @@
  * 16Kb I/O buffers (intended to hold DMA USB and Ethernet data, but currently
  * unused).
  */
-#include "../../inc/MarlinConfigPre.h"
+#include "../../inc/MarlinConfig.h"
 
 #if ENABLED(FLASH_EEPROM_EMULATION)
 
 #include "persistent_store_api.h"
-#include "../../inc/MarlinConfig.h"
 
 extern "C" {
   #include <lpc17xx_iap.h>
diff --git a/Marlin/src/HAL/SAMD51/inc/Conditionals_post.h b/Marlin/src/HAL/SAMD51/inc/Conditionals_post.h
index 223890d79016..b52462f6d891 100644
--- a/Marlin/src/HAL/SAMD51/inc/Conditionals_post.h
+++ b/Marlin/src/HAL/SAMD51/inc/Conditionals_post.h
@@ -24,5 +24,5 @@
 #if USE_EMULATED_EEPROM
   #undef SRAM_EEPROM_EMULATION
   #undef SDCARD_EEPROM_EMULATION
-  #define FLASH_EEPROM_EMULATION 1
+  #define FLASH_EEPROM_EMULATION
 #endif
diff --git a/Marlin/src/HAL/STM32/inc/Conditionals_post.h b/Marlin/src/HAL/STM32/inc/Conditionals_post.h
index 0285c52ee365..e51b55698e49 100644
--- a/Marlin/src/HAL/STM32/inc/Conditionals_post.h
+++ b/Marlin/src/HAL/STM32/inc/Conditionals_post.h
@@ -20,3 +20,8 @@
  *
  */
 #pragma once
+
+// If no real EEPROM, Flash emulation, or SRAM emulation is available fall back to SD emulation
+#if ENABLED(EEPROM_SETTINGS) && NONE(USE_REAL_EEPROM, FLASH_EEPROM_EMULATION, SRAM_EEPROM_EMULATION)
+  #define SDCARD_EEPROM_EMULATION
+#endif
diff --git a/Marlin/src/HAL/STM32_F4_F7/inc/Conditionals_post.h b/Marlin/src/HAL/STM32_F4_F7/inc/Conditionals_post.h
index 6e2cf6210163..5a190342ac7c 100644
--- a/Marlin/src/HAL/STM32_F4_F7/inc/Conditionals_post.h
+++ b/Marlin/src/HAL/STM32_F4_F7/inc/Conditionals_post.h
@@ -23,8 +23,7 @@
 
 #if ENABLED(EEPROM_SETTINGS) && defined(STM32F7)
   #undef USE_REAL_EEPROM
-  #define USE_EMULATED_EEPROM 1
   #undef SRAM_EEPROM_EMULATION
   #undef SDCARD_EEPROM_EMULATION
-  #define FLASH_EEPROM_EMULATION 1
+  #define FLASH_EEPROM_EMULATION
 #endif
diff --git a/Marlin/src/HAL/TEENSY31_32/inc/Conditionals_post.h b/Marlin/src/HAL/TEENSY31_32/inc/Conditionals_post.h
index 0285c52ee365..e51b55698e49 100644
--- a/Marlin/src/HAL/TEENSY31_32/inc/Conditionals_post.h
+++ b/Marlin/src/HAL/TEENSY31_32/inc/Conditionals_post.h
@@ -20,3 +20,8 @@
  *
  */
 #pragma once
+
+// If no real EEPROM, Flash emulation, or SRAM emulation is available fall back to SD emulation
+#if ENABLED(EEPROM_SETTINGS) && NONE(USE_REAL_EEPROM, FLASH_EEPROM_EMULATION, SRAM_EEPROM_EMULATION)
+  #define SDCARD_EEPROM_EMULATION
+#endif
diff --git a/Marlin/src/MarlinCore.cpp b/Marlin/src/MarlinCore.cpp
index f19aaef968d5..5e2fe02077cd 100644
--- a/Marlin/src/MarlinCore.cpp
+++ b/Marlin/src/MarlinCore.cpp
@@ -202,7 +202,7 @@ const char NUL_STR[] PROGMEM = "",
            SP_Z_LBL[] PROGMEM = " Z:",
            SP_E_LBL[] PROGMEM = " E:";
 
-bool Running = true;
+MarlinState marlin_state = MF_INITIALIZING;
 
 // For M109 and M190, this flag may be cleared (by M108) to exit the wait loop
 bool wait_for_heatup = true;
@@ -839,7 +839,7 @@ void stop() {
     SERIAL_ERROR_MSG(STR_ERR_STOPPED);
     LCD_MESSAGEPGM(MSG_STOPPED);
     safe_delay(350);       // allow enough time for messages to get out before stopping
-    Running = false;
+    marlin_state = MF_STOPPED;
   }
 }
 
@@ -991,8 +991,8 @@ void setup() {
     SETUP_RUN(ui.show_bootscreen());
   #endif
 
-  #if ENABLED(SDSUPPORT)
-    SETUP_RUN(card.mount());          // Mount the SD card before settings.first_load
+  #if ENABLED(SDSUPPORT) && defined(SDCARD_CONNECTION) && !SD_CONNECTION_IS(LCD)
+    SETUP_RUN(card.mount());          // Mount onboard / custom SD card before settings.first_load
   #endif
 
   SETUP_RUN(settings.first_load());   // Load data from EEPROM if available (or use defaults)
@@ -1183,6 +1183,8 @@ void setup() {
     SETUP_RUN(max7219.init());
   #endif
 
+  marlin_state = MF_RUNNING;
+
   SETUP_LOG("setup() completed.");
 }
 
diff --git a/Marlin/src/MarlinCore.h b/Marlin/src/MarlinCore.h
index 141ce7156e3a..3bce72ab80fc 100644
--- a/Marlin/src/MarlinCore.h
+++ b/Marlin/src/MarlinCore.h
@@ -76,9 +76,19 @@ void minkill(const bool steppers_off=false);
 
 void quickstop_stepper();
 
-extern bool Running;
-inline bool IsRunning() { return  Running; }
-inline bool IsStopped() { return !Running; }
+// Global State of the firmware
+enum MarlinState : uint8_t {
+  MF_INITIALIZING =  0,
+  MF_RUNNING      = _BV(0),
+  MF_PAUSED       = _BV(1),
+  MF_WAITING      = _BV(2),
+  MF_STOPPED      = _BV(3),
+  MF_KILLED       = _BV(7)
+};
+
+extern MarlinState marlin_state;
+inline bool IsRunning() { return marlin_state == MF_RUNNING; }
+inline bool IsStopped() { return marlin_state != MF_RUNNING; }
 
 bool printingIsActive();
 bool printingIsPaused();
diff --git a/Marlin/src/core/utility.cpp b/Marlin/src/core/utility.cpp
index 19247ff69fc2..5e159af58176 100644
--- a/Marlin/src/core/utility.cpp
+++ b/Marlin/src/core/utility.cpp
@@ -67,7 +67,6 @@ void safe_delay(millis_t ms) {
       TERN(PROBE_MANUALLY, "PROBE_MANUALLY", "")
       TERN(NOZZLE_AS_PROBE, "NOZZLE_AS_PROBE", "")
       TERN(FIX_MOUNTED_PROBE, "FIX_MOUNTED_PROBE", "")
-      TERN(BLTOUCH, "BLTOUCH", "")
       TERN(HAS_Z_SERVO_PROBE, TERN(BLTOUCH, "BLTOUCH", "SERVO PROBE"), "")
       TERN(TOUCH_MI_PROBE, "TOUCH_MI_PROBE", "")
       TERN(Z_PROBE_SLED, "Z_PROBE_SLED", "")
diff --git a/Marlin/src/gcode/bedlevel/abl/G29.cpp b/Marlin/src/gcode/bedlevel/abl/G29.cpp
index 2d782e9e33da..de6954598321 100644
--- a/Marlin/src/gcode/bedlevel/abl/G29.cpp
+++ b/Marlin/src/gcode/bedlevel/abl/G29.cpp
@@ -934,7 +934,12 @@ G29_TYPE GcodeSuite::G29() {
 
         // Unapply the offset because it is going to be immediately applied
         // and cause compensation movement in Z
-        current_position.z -= bilinear_z_offset(current_position);
+        #if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)
+          const float fade_scaling_factor = planner.fade_scaling_factor_for_z(current_position.z);
+        #else
+          constexpr float fade_scaling_factor = 1.0f;
+        #endif
+        current_position.z -= fade_scaling_factor * bilinear_z_offset(current_position);
 
         if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPAIR(" corrected Z:", current_position.z);
       }
diff --git a/Marlin/src/gcode/calibrate/G34_M422.cpp b/Marlin/src/gcode/calibrate/G34_M422.cpp
index 672f40737a5b..d1b828d079b8 100644
--- a/Marlin/src/gcode/calibrate/G34_M422.cpp
+++ b/Marlin/src/gcode/calibrate/G34_M422.cpp
@@ -203,7 +203,7 @@ void GcodeSuite::G34() {
         const uint8_t iprobe = (iteration & 1) ? NUM_Z_STEPPER_DRIVERS - 1 - i : i;
 
         // Safe clearance even on an incline
-        if (iteration == 0 || i > 0) do_blocking_move_to_z(z_probe);
+        if ((iteration == 0 || i > 0) && z_probe > current_position.z) do_blocking_move_to_z(z_probe);
 
         if (DEBUGGING(LEVELING))
           DEBUG_ECHOLNPAIR_P(PSTR("Probing X"), z_stepper_align.xy[iprobe].x, SP_Y_STR, z_stepper_align.xy[iprobe].y);
diff --git a/Marlin/src/gcode/control/M999.cpp b/Marlin/src/gcode/control/M999.cpp
index c498e66cabf0..79cd5e1854e2 100644
--- a/Marlin/src/gcode/control/M999.cpp
+++ b/Marlin/src/gcode/control/M999.cpp
@@ -23,7 +23,7 @@
 #include "../gcode.h"
 
 #include "../../lcd/ultralcd.h" // for lcd_reset_alert_level
-#include "../../MarlinCore.h"   // for Running
+#include "../../MarlinCore.h"   // for marlin_state
 #include "../queue.h"           // for flush_and_request_resend
 
 /**
@@ -37,7 +37,7 @@
  *
  */
 void GcodeSuite::M999() {
-  Running = true;
+  marlin_state = MF_RUNNING;
   ui.reset_alert_level();
 
   if (parser.boolval('S')) return;
diff --git a/Marlin/src/inc/Conditionals_post.h b/Marlin/src/inc/Conditionals_post.h
index 97090d477571..ebc77b9383a7 100644
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@@ -35,15 +35,13 @@
   #define HAS_LINEAR_E_JERK 1
 #endif
 
+// If no real EEPROM, Flash emulation, or SRAM emulation is available fall back to SD emulation
 #if ENABLED(EEPROM_SETTINGS)
   #if NONE(FLASH_EEPROM_EMULATION, SRAM_EEPROM_EMULATION, SDCARD_EEPROM_EMULATION) && EITHER(I2C_EEPROM, SPI_EEPROM)
     #define USE_REAL_EEPROM 1
   #else
     #define USE_EMULATED_EEPROM 1
   #endif
-  #if NONE(USE_REAL_EEPROM, FLASH_EEPROM_EMULATION, SRAM_EEPROM_EMULATION)
-    #define SDCARD_EEPROM_EMULATION 1
-  #endif
 #else
   #undef I2C_EEPROM
   #undef SPI_EEPROM
diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index 454183e54885..574d6a336eae 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -1993,9 +1993,24 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
     static_assert(PWM_PIN(E2_AUTO_FAN_PIN), "E2" AF_ERR_SUFF);
   #elif HAS_AUTO_FAN_3
     static_assert(PWM_PIN(E3_AUTO_FAN_PIN), "E3" AF_ERR_SUFF);
+  #elif HAS_AUTO_FAN_4
+    static_assert(PWM_PIN(E4_AUTO_FAN_PIN), "E4" AF_ERR_SUFF);
+  #elif HAS_AUTO_FAN_5
+    static_assert(PWM_PIN(E5_AUTO_FAN_PIN), "E5" AF_ERR_SUFF);
+  #elif HAS_AUTO_FAN_6
+    static_assert(PWM_PIN(E6_AUTO_FAN_PIN), "E6" AF_ERR_SUFF);
+  #elif HAS_AUTO_FAN_7
+    static_assert(PWM_PIN(E7_AUTO_FAN_PIN), "E7" AF_ERR_SUFF);
   #endif
 #endif
 
+/**
+ * Make sure only one EEPROM type is enabled
+ */
+#if ENABLED(EEPROM_SETTINGS) && 1 < ENABLED(SDCARD_EEPROM_EMULATION) + ENABLED(FLASH_EEPROM_EMULATION) + ENABLED(SRAM_EEPROM_EMULATION)
+  #error "Please select only one of SDCARD, FLASH, or SRAM_EEPROM_EMULATION."
+#endif
+
 /**
  * Make sure only one display is enabled
  */
diff --git a/Marlin/src/inc/Version.h b/Marlin/src/inc/Version.h
index 01474bde9621..05e2fe46d925 100644
--- a/Marlin/src/inc/Version.h
+++ b/Marlin/src/inc/Version.h
@@ -42,7 +42,7 @@
  * version was tagged.
  */
 #ifndef STRING_DISTRIBUTION_DATE
-  #define STRING_DISTRIBUTION_DATE "2020-03-14"
+  #define STRING_DISTRIBUTION_DATE "2020-03-16"
 #endif
 
 /**
diff --git a/Marlin/src/lcd/dogm/status_screen_DOGM.cpp b/Marlin/src/lcd/dogm/status_screen_DOGM.cpp
index 92f935f04b70..be414ab30372 100644
--- a/Marlin/src/lcd/dogm/status_screen_DOGM.cpp
+++ b/Marlin/src/lcd/dogm/status_screen_DOGM.cpp
@@ -448,10 +448,10 @@ void MarlinUI::draw_status_screen() {
         #endif
       }
 
+      constexpr bool can_show_days = DISABLED(DOGM_SD_PERCENT) || ENABLED(ROTATE_PROGRESS_DISPLAY);
       if (ev != lastElapsed) {
         lastElapsed = ev;
-        const bool has_days = (elapsed.value >= 60*60*24L);
-        const uint8_t len = elapsed.toDigital(elapsed_string, has_days);
+        const uint8_t len = elapsed.toDigital(elapsed_string, can_show_days && elapsed.value >= 60*60*24L);
         elapsed_x_pos = _SD_INFO_X(len);
 
         #if ENABLED(SHOW_REMAINING_TIME)
@@ -468,8 +468,7 @@ void MarlinUI::draw_status_screen() {
             }
             else {
               duration_t estimation = timeval;
-              const bool has_days = (estimation.value >= 60*60*24L);
-              const uint8_t len = estimation.toDigital(estimation_string, has_days);
+              const uint8_t len = estimation.toDigital(estimation_string, can_show_days && estimation.value >= 60*60*24L);
               estimation_x_pos = _SD_INFO_X(len
                 #if !BOTH(DOGM_SD_PERCENT, ROTATE_PROGRESS_DISPLAY)
                   + 1
diff --git a/Marlin/src/lcd/menu/menu_configuration.cpp b/Marlin/src/lcd/menu/menu_configuration.cpp
index ae0abbf74668..25b253b26183 100644
--- a/Marlin/src/lcd/menu/menu_configuration.cpp
+++ b/Marlin/src/lcd/menu/menu_configuration.cpp
@@ -138,12 +138,12 @@ void menu_advanced_settings();
     START_MENU();
     BACK_ITEM(MSG_CONFIGURATION);
     #if ENABLED(DUAL_X_CARRIAGE)
-      EDIT_ITEM_FAST(float51, MSG_HOTEND_OFFSET_X, &hotend_offset[1].x, float(X2_HOME_POS - 25), float(X2_HOME_POS + 25), _recalc_offsets);
+      EDIT_ITEM_FAST(float52, MSG_HOTEND_OFFSET_X, &hotend_offset[1].x, float(X2_HOME_POS - 25), float(X2_HOME_POS + 25), _recalc_offsets);
     #else
-      EDIT_ITEM_FAST(float41sign, MSG_HOTEND_OFFSET_X, &hotend_offset[1].x, -99.0, 99.0, _recalc_offsets);
+      EDIT_ITEM_FAST(float52, MSG_HOTEND_OFFSET_X, &hotend_offset[1].x, -99.0, 99.0, _recalc_offsets);
     #endif
-    EDIT_ITEM_FAST(float41sign, MSG_HOTEND_OFFSET_Y, &hotend_offset[1].y, -99.0, 99.0, _recalc_offsets);
-    EDIT_ITEM_FAST(float41sign, MSG_HOTEND_OFFSET_Z, &hotend_offset[1].z, Z_PROBE_LOW_POINT, 10.0, _recalc_offsets);
+    EDIT_ITEM_FAST(float52,   MSG_HOTEND_OFFSET_Y, &hotend_offset[1].y, -99.0, 99.0, _recalc_offsets);
+    EDIT_ITEM_FAST(float52,   MSG_HOTEND_OFFSET_Z, &hotend_offset[1].z, Z_PROBE_LOW_POINT, 10.0, _recalc_offsets);
     #if ENABLED(EEPROM_SETTINGS)
       ACTION_ITEM(MSG_STORE_EEPROM, lcd_store_settings);
     #endif
diff --git a/Marlin/src/module/configuration_store.cpp b/Marlin/src/module/configuration_store.cpp
index eb773250942f..3a83dd7c1d00 100644
--- a/Marlin/src/module/configuration_store.cpp
+++ b/Marlin/src/module/configuration_store.cpp
@@ -1531,10 +1531,10 @@ void MarlinSettings::postprocess() {
         _FIELD_TEST(planner_leveling_active);
         #if ENABLED(AUTO_BED_LEVELING_UBL)
           const bool &planner_leveling_active = planner.leveling_active;
-          const uint8_t &ubl_storage_slot = ubl.storage_slot;
+          const int8_t &ubl_storage_slot = ubl.storage_slot;
         #else
           bool planner_leveling_active;
-          uint8_t ubl_storage_slot;
+          int8_t ubl_storage_slot;
         #endif
         EEPROM_READ(planner_leveling_active);
         EEPROM_READ(ubl_storage_slot);
@@ -2185,8 +2185,10 @@ void MarlinSettings::postprocess() {
     }
 
     #if ENABLED(EEPROM_CHITCHAT) && DISABLED(DISABLE_M503)
-      if (!validating) report();
+      // Report the EEPROM settings
+      if (!validating && (DISABLED(EEPROM_BOOT_SILENT) || IsRunning())) report();
     #endif
+
     EEPROM_FINISH();
 
     return !eeprom_error;
diff --git a/Marlin/src/module/planner.cpp b/Marlin/src/module/planner.cpp
index 74177490882f..3b2daf1812e9 100644
--- a/Marlin/src/module/planner.cpp
+++ b/Marlin/src/module/planner.cpp
@@ -2041,7 +2041,10 @@ bool Planner::_populate_block(block_t * const block, bool split_move,
   #endif
 
   #if ENABLED(SLOWDOWN)
-    if (WITHIN(moves_queued, 2, (BLOCK_BUFFER_SIZE) / 2 - 1)) {
+    #ifndef SLOWDOWN_DIVISOR
+      #define SLOWDOWN_DIVISOR 2
+    #endif
+    if (WITHIN(moves_queued, 2, (BLOCK_BUFFER_SIZE) / (SLOWDOWN_DIVISOR) - 1)) {
       if (segment_time_us < settings.min_segment_time_us) {
         // buffer is draining, add extra time.  The amount of time added increases if the buffer is still emptied more.
         const uint32_t nst = segment_time_us + LROUND(2 * (settings.min_segment_time_us - segment_time_us) / moves_queued);
diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp
index d0b1ddf0a337..f16a3af04693 100644
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@@ -765,7 +765,7 @@ int16_t Temperature::getHeaterPower(const heater_ind_t heater_id) {
 //
 
 inline void loud_kill(PGM_P const lcd_msg, const heater_ind_t heater) {
-  Running = false;
+  marlin_state = MF_KILLED;
   #if USE_BEEPER
     for (uint8_t i = 20; i--;) {
       WRITE(BEEPER_PIN, HIGH); delay(25);
@@ -2003,7 +2003,7 @@ void Temperature::init() {
 
     /**
       SERIAL_ECHO_START();
-      SERIAL_ECHOPGM("Thermal Thermal Runaway Running. Heater ID: ");
+      SERIAL_ECHOPGM("Thermal Runaway Running. Heater ID: ");
       if (heater_id == H_CHAMBER) SERIAL_ECHOPGM("chamber");
       if (heater_id < 0) SERIAL_ECHOPGM("bed"); else SERIAL_ECHO(heater_id);
       SERIAL_ECHOPAIR(" ;  State:", sm.state, " ;  Timer:", sm.timer, " ;  Temperature:", current, " ;  Target Temp:", target);
diff --git a/Marlin/src/pins/lpc1768/pins_AZSMZ_MINI.h b/Marlin/src/pins/lpc1768/pins_AZSMZ_MINI.h
index 1f02f9299e35..ef064694abad 100644
--- a/Marlin/src/pins/lpc1768/pins_AZSMZ_MINI.h
+++ b/Marlin/src/pins/lpc1768/pins_AZSMZ_MINI.h
@@ -31,6 +31,12 @@
 
 #define BOARD_INFO_NAME "AZSMZ MINI"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //
diff --git a/Marlin/src/pins/lpc1768/pins_BIQU_B300_V1.0.h b/Marlin/src/pins/lpc1768/pins_BIQU_B300_V1.0.h
index 4ff4ebc73bde..a4800dcc73d5 100644
--- a/Marlin/src/pins/lpc1768/pins_BIQU_B300_V1.0.h
+++ b/Marlin/src/pins/lpc1768/pins_BIQU_B300_V1.0.h
@@ -38,6 +38,12 @@
   #define BOARD_INFO_NAME "BIQU Thunder B300 V1.0"
 #endif
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Limit Switches
 //
diff --git a/Marlin/src/pins/lpc1768/pins_BIQU_BQ111_A4.h b/Marlin/src/pins/lpc1768/pins_BIQU_BQ111_A4.h
index 17a9b7d58da8..549b44019a42 100644
--- a/Marlin/src/pins/lpc1768/pins_BIQU_BQ111_A4.h
+++ b/Marlin/src/pins/lpc1768/pins_BIQU_BQ111_A4.h
@@ -36,6 +36,12 @@
 
 #define BOARD_INFO_NAME "BIQU BQ111-A4"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Limit Switches
 //
diff --git a/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_1.h b/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_1.h
index 104f40fdf16c..feadafa5922d 100644
--- a/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_1.h
+++ b/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_1.h
@@ -23,6 +23,12 @@
 
 #define BOARD_INFO_NAME "BIGTREE SKR 1.1"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Limit Switches
 //
diff --git a/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_3.h b/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_3.h
index bd0ad468de0b..3bd2640665f5 100644
--- a/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_3.h
+++ b/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_3.h
@@ -23,6 +23,12 @@
 
 #define BOARD_INFO_NAME "BIGTREE SKR 1.3"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 /**
  * Trinamic Stallguard pins
  */
diff --git a/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h b/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h
index 3fb66aa156c7..e9a46ba55140 100644
--- a/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h
+++ b/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h
@@ -25,6 +25,14 @@
   #define BOARD_INFO_NAME "BIGTREE SKR 1.4"
 #endif
 
+//
+// EEPROM
+//
+#if NONE(FLASH_EEPROM_EMULATION, SDCARD_EEPROM_EMULATION)
+  #define FLASH_EEPROM_EMULATION
+  //#define SDCARD_EEPROM_EMULATION
+#endif
+
 //
 // SD Connection
 //
@@ -88,11 +96,7 @@
 // Z Probe (when not Z_MIN_PIN)
 //
 #ifndef Z_MIN_PROBE_PIN
-  #if Z_STOP_PIN != P1_27
-    #define Z_MIN_PROBE_PIN P1_27
-  #else
-    #define Z_MIN_PROBE_PIN P0_10
-  #endif
+  #define Z_MIN_PROBE_PIN  P0_10
 #endif
 
 //
diff --git a/Marlin/src/pins/lpc1768/pins_BTT_SKR_common.h b/Marlin/src/pins/lpc1768/pins_BTT_SKR_common.h
index e84d3de2b1e3..2844fb3cdab8 100644
--- a/Marlin/src/pins/lpc1768/pins_BTT_SKR_common.h
+++ b/Marlin/src/pins/lpc1768/pins_BTT_SKR_common.h
@@ -32,6 +32,10 @@
 // Ignore temp readings during development.
 //#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000
 
+#if DISABLED(SDCARD_EEPROM_EMULATION)
+  #define FLASH_EEPROM_EMULATION
+#endif
+
 //
 // Steppers
 //
diff --git a/Marlin/src/pins/lpc1768/pins_GMARSH_X6_REV1.h b/Marlin/src/pins/lpc1768/pins_GMARSH_X6_REV1.h
index 28445962ac7b..5ebf6ecba16e 100644
--- a/Marlin/src/pins/lpc1768/pins_GMARSH_X6_REV1.h
+++ b/Marlin/src/pins/lpc1768/pins_GMARSH_X6_REV1.h
@@ -30,6 +30,12 @@
 // Ignore temp readings during develpment.
 //#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Enable 12MHz clock output on P1.27 pin to sync TMC2208 chip clocks
 //
diff --git a/Marlin/src/pins/lpc1768/pins_MKS_SBASE.h b/Marlin/src/pins/lpc1768/pins_MKS_SBASE.h
index b3dba6794c9a..6fb38f3e4646 100644
--- a/Marlin/src/pins/lpc1768/pins_MKS_SBASE.h
+++ b/Marlin/src/pins/lpc1768/pins_MKS_SBASE.h
@@ -38,6 +38,14 @@
   #define BOARD_WEBSITE_URL "github.com/makerbase-mks/MKS-SBASE"
 #endif
 
+//
+// EEPROM
+//
+#if NONE(FLASH_EEPROM_EMULATION, SDCARD_EEPROM_EMULATION)
+  #define FLASH_EEPROM_EMULATION
+  //#define SDCARD_EEPROM_EMULATION
+#endif
+
 #define LED_PIN            P1_18   // Used as a status indicator
 #define LED2_PIN           P1_19
 #define LED3_PIN           P1_20
diff --git a/Marlin/src/pins/lpc1768/pins_MKS_SGEN_L.h b/Marlin/src/pins/lpc1768/pins_MKS_SGEN_L.h
index 58f9eb549337..e7471f6ec644 100644
--- a/Marlin/src/pins/lpc1768/pins_MKS_SGEN_L.h
+++ b/Marlin/src/pins/lpc1768/pins_MKS_SGEN_L.h
@@ -32,6 +32,12 @@
 #define BOARD_INFO_NAME   "MKS SGen-L"
 #define BOARD_WEBSITE_URL "github.com/makerbase-mks/MKS-SGEN_L"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //
diff --git a/Marlin/src/pins/lpc1768/pins_RAMPS_RE_ARM.h b/Marlin/src/pins/lpc1768/pins_RAMPS_RE_ARM.h
index bf989798fd1d..18c3ee992b51 100644
--- a/Marlin/src/pins/lpc1768/pins_RAMPS_RE_ARM.h
+++ b/Marlin/src/pins/lpc1768/pins_RAMPS_RE_ARM.h
@@ -42,6 +42,12 @@
 
 #define BOARD_INFO_NAME "Re-ARM RAMPS 1.4"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //
diff --git a/Marlin/src/pins/lpc1768/pins_SELENA_COMPACT.h b/Marlin/src/pins/lpc1768/pins_SELENA_COMPACT.h
index 1a8e997eb2c7..3c55ac9be3fe 100644
--- a/Marlin/src/pins/lpc1768/pins_SELENA_COMPACT.h
+++ b/Marlin/src/pins/lpc1768/pins_SELENA_COMPACT.h
@@ -32,6 +32,12 @@
 #define BOARD_INFO_NAME   "Selena Compact"
 #define BOARD_WEBSITE_URL "github.com/Ales2-k/Selena"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //
diff --git a/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_GT.h b/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_GT.h
index 5ee0e5856621..1b91e4f50bb1 100644
--- a/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_GT.h
+++ b/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_GT.h
@@ -32,6 +32,12 @@
 #define BOARD_INFO_NAME   "Azteeg X5 GT"
 #define BOARD_WEBSITE_URL "tinyurl.com/yx8tdqa3"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //
@@ -47,7 +53,6 @@
 #define Z_MIN_PIN          P1_26
 #define Z_MAX_PIN          P1_29
 
-
 //
 // Steppers
 //
diff --git a/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_MINI.h b/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_MINI.h
index 2c54bd603527..7559d6ad509a 100644
--- a/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_MINI.h
+++ b/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_MINI.h
@@ -187,6 +187,14 @@
 
 #endif // HAS_SPI_LCD
 
+//
+// EEPROM
+//
+#if NONE(FLASH_EEPROM_EMULATION, SDCARD_EEPROM_EMULATION)
+  #define FLASH_EEPROM_EMULATION
+  //#define SDCARD_EEPROM_EMULATION
+#endif
+
 //
 // SD Support
 //
diff --git a/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_MINI_WIFI.h b/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_MINI_WIFI.h
index 4b731ae9d343..1e5d2f3a2c11 100644
--- a/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_MINI_WIFI.h
+++ b/Marlin/src/pins/lpc1769/pins_AZTEEG_X5_MINI_WIFI.h
@@ -31,6 +31,12 @@
 
 #define BOARD_INFO_NAME "Azteeg X5 MINI WIFI"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // DIGIPOT slave addresses
 //
diff --git a/Marlin/src/pins/lpc1769/pins_BTT_SKR_V1_4_TURBO.h b/Marlin/src/pins/lpc1769/pins_BTT_SKR_V1_4_TURBO.h
index 937ba56bb729..a8649b6f8ddc 100644
--- a/Marlin/src/pins/lpc1769/pins_BTT_SKR_V1_4_TURBO.h
+++ b/Marlin/src/pins/lpc1769/pins_BTT_SKR_V1_4_TURBO.h
@@ -24,6 +24,12 @@
 #define BOARD_INFO_NAME "BIGTREE SKR 1.4 TURBO"
 #define SKR_HAS_LPC1769
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Include SKR 1.4 pins
 //
diff --git a/Marlin/src/pins/lpc1769/pins_COHESION3D_MINI.h b/Marlin/src/pins/lpc1769/pins_COHESION3D_MINI.h
index 739603e2b644..3556ff83f004 100644
--- a/Marlin/src/pins/lpc1769/pins_COHESION3D_MINI.h
+++ b/Marlin/src/pins/lpc1769/pins_COHESION3D_MINI.h
@@ -31,6 +31,12 @@
 
 #define BOARD_INFO_NAME "Cohesion3D Mini"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //
diff --git a/Marlin/src/pins/lpc1769/pins_COHESION3D_REMIX.h b/Marlin/src/pins/lpc1769/pins_COHESION3D_REMIX.h
index 58bf0d6e71c9..2502c765801d 100644
--- a/Marlin/src/pins/lpc1769/pins_COHESION3D_REMIX.h
+++ b/Marlin/src/pins/lpc1769/pins_COHESION3D_REMIX.h
@@ -31,6 +31,12 @@
 
 #define BOARD_INFO_NAME "Cohesion3D ReMix"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //
diff --git a/Marlin/src/pins/lpc1769/pins_MKS_SGEN.h b/Marlin/src/pins/lpc1769/pins_MKS_SGEN.h
index a5a91f6207b9..cac0868d5103 100644
--- a/Marlin/src/pins/lpc1769/pins_MKS_SGEN.h
+++ b/Marlin/src/pins/lpc1769/pins_MKS_SGEN.h
@@ -31,8 +31,14 @@
 
 #define BOARD_INFO_NAME   "MKS SGen"
 #define BOARD_WEBSITE_URL "github.com/makerbase-mks/MKS-SGEN"
-#define MKS_HAS_LPC1769
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
+#define MKS_HAS_LPC1769
 #include "../lpc1768/pins_MKS_SBASE.h"
 
 #undef E1_STEP_PIN
diff --git a/Marlin/src/pins/lpc1769/pins_SMOOTHIEBOARD.h b/Marlin/src/pins/lpc1769/pins_SMOOTHIEBOARD.h
index 5bf64e9d02fa..3db8a994036d 100644
--- a/Marlin/src/pins/lpc1769/pins_SMOOTHIEBOARD.h
+++ b/Marlin/src/pins/lpc1769/pins_SMOOTHIEBOARD.h
@@ -32,6 +32,12 @@
 #define BOARD_INFO_NAME   "Smoothieboard"
 #define BOARD_WEBSITE_URL "smoothieware.org/smoothieboard"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //
diff --git a/Marlin/src/pins/lpc1769/pins_TH3D_EZBOARD.h b/Marlin/src/pins/lpc1769/pins_TH3D_EZBOARD.h
index 8f7d00bb3bdd..9f28c2d94e74 100644
--- a/Marlin/src/pins/lpc1769/pins_TH3D_EZBOARD.h
+++ b/Marlin/src/pins/lpc1769/pins_TH3D_EZBOARD.h
@@ -32,6 +32,12 @@
 #define BOARD_INFO_NAME   "TH3D EZBoard"
 #define BOARD_WEBSITE_URL "th3dstudio.com"
 
+//
+// EEPROM
+//
+#define FLASH_EEPROM_EMULATION
+//#define SDCARD_EEPROM_EMULATION
+
 //
 // Servos
 //