Once it reaches 100%, it will tell you to remove the SD card. The tablet will reboot into a fresh installation of Android (usually version 4.0.3 or 4.1.1). Common Issues & Troubleshooting
Why bother saving a WM8850 tablet?
How to Reinstall the Firmware (The "Firmware Install" Process) wm8850 mid7 puzhi w01 8223 ft5206 w70 wmc15797z upd
Rooting provides administrative access to the operating system, allowing you to remove bloatware, install custom ROMs, and run powerful apps that require deep system access. Once it reaches 100%, it will tell you to remove the SD card
This is the most critical suffix for you, the repair technician. How to Reinstall the Firmware (The "Firmware Install"
Before flashing anything, you should ideally open the tablet (they usually clip together without screws). Look for a string printed directly on the green circuit board. It might look like W01_8223_V2 . This is the only way to be 100% sure the firmware will work. 2. Locate the Firmware