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IMCUnlock

This mod allows you to manage the internal user partitions on the PSP2 by modifying EMMC's Master Boot Record.

ref0

Installation:

  1. Download and install the provided VPK file.

  2. Make a backup of all important files in system's user partitions (ur0/vd0/tm0).

  3. Open IMCUnlock, accept the agreement, and then choose the option that suits you:

    • "100MB ux0 partition" - creates a ~100MB imc partition, requires formatting it via settings or safemode.

    • "Hybrid ur0-pd0 and 2.5GB ux0" - ur0 becomes imc, makes pd0 and ur0 share the same data region (pd0 = ur0).

    • "Default 2xxx storage configuration" - a ~1GB imc partition with 1.5GB ur0, requires formatting imc via settings or safemode.

    • "Default 1xxx storage configuration" - no imc, 2.5GB ur0, select ONLY with a memory card inserted.

    • "Dump/Flash the user partition table" - Creates/Flashes a partition table, to use with /pc/mbrtool.

  4. After flashing reboot and format the new partition(s). ref1

  5. Reboot again, the new partition(s) should now be accessible ref2

FAQ:

  • Q: What is the largest possible IMC?
    • A: Around 3GB without breaking the important partitions.
  • Q: Does the new partition stay after firmware update/reinstall?
    • A: Yes, the only way to remove the mod is via the IMCUnlock.
  • Q: Can I update when a new firmware comes out?
    • A: No, you should wait for someone to confirm that it works/or that it breaks the vita.
  • Q: My device is stuck on bootlogo/health warning/spinning circle, help!
    • A: Start in safe mode and restore the system.
  • Q: Why the vita does a soft reboot when I remove/insert the mc?
    • A: Patches are applied.
  • Q: Is it backwards-compatible?
    • A: Yes.
  • Q: Is there any way to recover if I bricked the MBR with a customized partition table?
    • A: Yes, but only if you have enso_ex v4+ installed and running.

Useful notes:

  • Only pick the "1XXX" option if you have a sony memory card inserted.
  • If you dont know which option you should pick - go for the 100MB one.
  • /pc/mbrtool lets advanced users create their own user partition table.
  • If you have enso_ex v4+ installed you should be able to recover from any possible lock.
  • To have a ~3GB imc create a small hybrid ur0-ud0(-pd0) and give the rest to imc.
  • With any serious issues DM me on twitter (twitter.com/skgleba)