1. Run the downloaded RUU. When the RUU is running, you do not need to click next. Open any task manager that can see the folder where the process is located (not available in XP), Windows 7 should be available, and then a lot of other third-party task managers can. Anyway, you only need to see the folder where the process is located.
2. Find the folder where adb.exe( aruwizard.exe) is located. Open the folder on my computer. Find a file named rom.zip in the opened folder. Copy it. Then you can disable RUU.
3. Rename rom.zipas pg88img.zip. In addition to renaming, do not modify it. In addition, the file name must be changed according to what I said, and the case must be the same. Make sure that your memory card is FAT32, preferably genuine.
4. Copy the renamed pg88img.zip file to the memory card. Connect the memory card to your mobile phone and install a battery on your mobile phone. When the volume is down + the power key is turned on, hboot will be started.
5. Wait a moment and you will be asked if you want to brush the machine. Press the volume to start flashing. After refreshing the phone, follow the prompts and press the power button to restart the phone.