You will often see the W70 and V20 bundled together in firmware searches. Why? Because they share the same motherboard reference design.
Do you have the number found on the back of your tablet or on the internal motherboard? eken+w70+v20+wm8850+firmware+link
: Firmware updates for this device are typically sought to fix common hardware-related software bugs, such as the "crazy touchscreen" issue that occurs when the device is connected to certain power supplies. For a detailed guide on the flashing process, experts from CNX Software You will often see the W70 and V20
This is the most reliable community source for WonderMedia tablets. Look for the "WM8850-W70" section or the Uberoid custom firmware, which was widely used to improve performance on these devices. eken+w70+v20+wm8850+firmware+link