This is a classic symptom of flashing the wrong firmware version for your motherboard revision. The kernel lacks the specific .ko driver modules for your Wi-Fi or touch digitizer chip. Modding and Custom ROM Development
This is the most common complaint. When stock firmware is not available online, your options include: Allwinner A133 Firmware
Flashing stock firmware is the ultimate solution for fixing boot loops, removing malware, or restoring a tablet to factory settings. Step 1: Install Allwinner USB Drivers This is a classic symptom of flashing the