How to install ROM on AGM X1
1,
Download the official ROM for AGM X1 from this page:
http://www.agmmobile.com/en/page/service
2,
Extract this zip file, and save the folder to your SD card.
3,
Insert the SD card into the phone, hold Vol Up + Vol Down + Power for 3 seconds, when you
see something like this, release the Vol buttons , only long press the power key.
4,
Wait for a while patiently
5,
Once it shows up, long press power key to reboot your phone.
6,
Update is finished after the phone reboots.