Download Android Lollipop 5.1.1 stock firmware for Ultron G100 TV Box
This firmware is for Ultron G100 TV Box with Rockchip RK3229 CPU.
Download Android Lollipop 5.1.1 stock firmware for Ultron G100 TV Box from here or here. Download Android 4.4.4 KitKat stock firmware for Ultron G100 TV Box from here.
Download Rockchip Driver Assistant v4.4 from here and download Rockchip Batch Tool v1.8 from here.
Firmware details
Archive: update_rtl8723_Ultron_5.1.1_20170301
Model: Ultron G100 TV Box
Model number: Ultron-G100
Image file size: 222 MB
Platform: Rockchip RK3229 / RK322A
Image: update_rtl8723_Ultron_5.1.1_20170301.img
Build number: rk322x_box-userdebug 5.1.1 LMY49F eng.foxluo.20170301.134221 test-keys
FW version: 5.0.00
Boot version: 2.31
SDK version: RK30_ANDROID5.1.1-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.