Download Android KitKat 4.4.2 stock firmware for D80 tablet from here or here.
Firmware details
Archive: D80测试软件及出货软件
Image: RK3188_4.4.2_d80_zhongxing_800X1280_V001_20150601 / update.img
Platform: Rockchip RK3188
Archive size: 316 MB
Firmware details
Archive: D80测试软件及出货软件
Image: RK3188_4.4.2_d80_zhongxing_800X1280_V001_20150601 / update.img
Platform: Rockchip RK3188
Archive size: 316 MB
Boot version: 2.10
Firmware version: 4.4.02
Build number: rk3188-eng 4.4.2 KOT49H eng.zhouza.20150325.095120 test-keys
Model number: rk3188
SDK version: RK30_ANDROID$(PLATFORM_VERSION)-SDK-v1.00.00 \
Firmware version: 4.4.02
Build number: rk3188-eng 4.4.2 KOT49H eng.zhouza.20150325.095120 test-keys
Model number: rk3188
SDK version: RK30_ANDROID$(PLATFORM_VERSION)-SDK-v1.00.00 \
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.
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