AOSP ROM flashing instructions for Poco F7 (onyx)

CLEAN FLASH:

1. Download & Extract recovery images if recovery images is provided on separate zip file: boot.img, dtbo.img, init_boot.img, recovery.img, vendor_boot.img
2. Power off the device, and boot it into bootloader mode: with the device powered off, hold Volume Down + Power. Keep holding both buttons until the word “FASTBOOT” appears on the screen, then release.
3. Flash the downloaded image files to your device by typing:

fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash init_boot init_boot.img
fastboot flash recovery recovery.img
fastboot flash vendor_boot vendor_boot.img

4. Now reboot into recovery to verify the installation:

fastboot reboot recovery

5. Navigate to Apply Update > Apply from ADB

6. adb sideload the AOSP ROM zip using

adb -d sideload /path/to/ROM-*.zip

7. Reboot to recovery

8. Vanilla Build user who want flash gapps using "adb sideload gapps-*.zip" (optional)

9. Factory reset/format data

10. Reboot to system

DIRTY FLASH:

1. Go to recovery
2. Navigate to Apply Update > Apply from ADB
3. adb sideload the AOSP ROM zip using

adb -d sideload /path/to/ROM-*.zip

4. Reboot to recovery

5. Vanilla Build user who want flash gapps using "adb sideload gapps-*.zip" (optional)

6. Reboot to system