1. Format the memory card 2. In the root of the memory card, throw the Update.zip archive, extracted from the main archive 3. Insert a memory card into the phone and stick the battery 4. On the telephone off the phone. inclusion and holding it right away to press the volume button down (minus) until the screensaver appears without vibration 5. Release both buttons and wait for an image of a triangle and phone. 6. To appear the recovery menu, press the volume button up (plus) 7. In the recovery, you can make wipes or install the firmware (Update)
miscellanea
There are two languages ​​in the firmware - English and Chinese.
4. On the telephone off the phone. inclusion and holding it right away to press the volume button down (minus) until the screensaver appears without vibration 5. Release both buttons and wait for an image of a triangle and phone. 6. To appear the recovery menu, press the volume button up (plus)
Does anyone have a fusion firmware on ZTE U791 in format (PAC)!? not (zip) for brick firmware via researchdownload .... because In recovery you can not enter ....