I have a XT920 with root and this night I received an update for my XT920. After update my phone becames in loop while booting. I found a lot of threads about this problem because the phone was rooted. And to solve this problem the solution was flash another rom to the phone. I started the procedure below:
Fastboot flash boot boot-sign.img
Fastboot flash system system-sign.img
Fastboot flash recovery recovery-sign.img
Fastboot flash flex flex.img
When I executed the second command, I noticed that the first activity was erasing the partition. I wait about 20 minutes in this activity, but it doesn't finish. So I disconect the phone from the USB cable.
Now when I enter in the boot menu, no action works and the phone reboot. So I can't enter in recovery mode, fastboot mode and can't do a factory reset on the phone. All other the procedures (with fastboot, RSD NetConnected, RSD Lite) that I find in the forum needs the fastboot mode to recover thhe phone and flash the ROM again.
There is another way to save my phone? Can somebody help me?
ps: sorry for my poor english.