The GPY build is not working properly as official one

[syndycat]

Building the GPY with:
cd esp32
make BOARD=GPY clean
make BOARD=GPY TARGET=boot
make BOARD=GPY TARGET=app
make BOARD=GPY ESPPORT=COM3 flash

builds and flash it to GPY
Testing the lte.connect() doesn't work.

If the GPY is flashed with the original firmware (using pycom firmware update 1.6.0) the lte.connect() works. Do we have to build with special params like radio freq or others?

Thank you!