Download Android Nougat 7.1.1 stock firmware PC version for MECOOL KII Pro TV Box from here, here or here. Download Android Nougat 7.1.1 stock firmware SD card version for MECOOL KII Pro TV Box from here, here or here. Download Amlogic USB Burning Tool v2.0.8 from here or download Amlogic Burn_Card_Maker v2.0.2 from here.
Archive: KII PRO 20171127 / KII PRO 20171127
Model: Mecool KII Pro 2GB / 16GB TV Box
Image file size: 902 MB / 980 MB
Platform: Amlogic S905D
Build number: Amlogic/p21x/p21x:7.1.1/NHG47L/20171127.101240.V0928:userdebug
Other: STB DVB-T2/S2/C
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.