Search for your device’s PCB number (e.g., "DM-702-V1.3") on Baidu Pan or Tencent Weiyun. However, downloading from these requires a Chinese account and often painfully slow speeds.
Click the "..." button at the top right and select your 4.4.2 firmware .img file . Enter Flash Mode: Power off the tablet.
You must use AndroidTool instead of Batch Tool. Open AndroidTool, go to the "Advanced Function" tab, click EraseIDB , and then attempt to flash the firmware again. Error: "Lower Version Error"
An alternative, advanced developer utility used if your firmware is split into individual partition images (e.g., parameter.txt , boot.img , kernel.img , system.img ).
The device will automatically disconnect, reboot, and begin its initial Android setup. Note that the first boot after a full format can take upwards of 5 to 10 minutes as it builds the dalvik cache. Troubleshooting Common Flashing Failures