Install Instructions

Install instructions:

• Warning, you are doing this on your own risk:
  If you are switching from original rom, you must do a factory reset,
  that is delete and format the userdata partition!

• Install the tools adb and fastboot on your PC

• Download e-<LATEST VERSION>-UNOFFICIAL-GX290.zip from the files section

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• make sure the battery is charged!

• Unlock bootloader in the developer options
  (tab five times "about phone/build-number")
  (system/developer: unlock bootloader)

• reboot to fastboot 1):
  adb shell reboot bootloader
  Confirm your first adb access on the phone

• unlock, confirm on screen:
  fastboot flashing unlock

• unzip recovery (e.g.):
  unzip e-2.9-s-20250531-UNOFFICIAL-GX290.zip recovery.img

• flash it:
  fastboot flash recovery recovery.img

• boot recovery:
  fastboot reboot recovery

• in recovery,
  Do a data/factory reset if switching from original rom / old Android!

• select "Apply update", "Apply from adb" 2)
  adb sideload e-2.9-s-20250531-UNOFFICIAL-GX290.zip

• reboot to bootloader (Advanced / Reboot to bootloader)

• lock bootloader, confirm on screen:
  fastboot flashing lock

• start phone:
  fastboot reboot

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1) if that fails:

• unplug usb cable
• power down the phone.
• hold volume-up
• plug in usb power
• ~5 seconds, boot menu shows up

2) this may fail the 1st time, "adb: sideload connection failed: device unauthorized." Click cancel and try again.