Extract your download. You should see a folder named FirmwareInstall and a file named wmt_scriptcmd . Both must be placed in the root directory of the SD card.
This specific string of characters——is a technical fingerprint for a very specific generation of "white label" Android tablets produced around 2012–2014. wm8850 mid7 puzhi w01 8223 ft5206 w70 wmc15797z upd
Refers to the Wi-Fi chip (likely the Realtek RTL8188 or similar). Extract your download
The WonderMedia bootloader should detect the script and show a blue or green progress bar on the screen. wm8850 mid7 puzhi w01 8223 ft5206 w70 wmc15797z upd
Often refers to the specific LCD panel or the firmware build version.
These are internal factory codes for the PCB (motherboard) design.
Turn the tablet completely off. Insert the SD card and turn the tablet on.