[TUTO] How To flash/update Zgemma H9x/H9.2x series

use FAT32 formatted USB stick

-send the h9 folder and 2 files (bootargs.bin and fastboot.bin) to the clean USB memory stick and then take it out of your PC properly expelled first

-switch off your Zgemma H9 at the back, using the white power button

-shove the USB stick into the back USB port of your H9

-press and hold the small, black RESET button at the back, then

-press the white POWER button, while holding the RESET button

-let go of the RESET button once you see the LED flashing (changing colour between white and red)

-wait a bit…