ho trovato questo
FLASH GUIDE:
0. Get recovery.img for flyme OS
Get update.zip from flyme.cn/fireware.jsp (only Flyme 4.1.1A test ok.)
1. Enter fastboot mode
you can press POWER-KEY + VOL-DOWN to restart and into fastboot mode
OR
use adb reboot-recovery oder adb reboot recovery
2. re-flash recovery partition with command
fastboot flash recovery recovery.img
3. reboot and enter recovery mode
fastboot reboot recovery oder fastboot reboot-recovery
4. Select sideload mode on your mx4, next input command
adb sideload update.zip
when upload finished, next will update by itself.
5. Select reboot
6. Your mx4 will come to flyme. The first time to boot maybe cost a few minutes.
I have test this on mx4 ubuntu for develop. EU version have not tested.