Important: This guide is generic for many devices using the Unisoc UMS512 (Tiger T310) SoC. Your specific hardware variant (screen resolution, touch IC, CAN bus decoder) may require vendor-specific firmware. Using incorrect firmware can brick your device.
This is the most common issue with the NATV variant specifically. If you touch the bottom of the screen and the top registers, or the touch is reversed horizontally, your current driver (kernel) is wrong. A correct UMS512-1H10-NATV flash fixes this. ums512-1h10-natv firmware update
Updating or modifying these units often requires access to restricted factory menus: or the touch is reversed horizontally
Security & Stability: Updates may include the latest Android security patches and bug fixes for the UIS7862 chipset. ums512-1h10-natv firmware update