Firmware Library /library/RockChip PX3 Android 5.1/JYHCT4_rk3188_5.1(20160326).rar380.4 Mb2018-04-15 17:03HCT4_rk3188_5.1(20160616).rar405.29 Mb2018-04-15 16:26HCT4_rk3188_5.1(20160623).rar405.68 Mb2020-06-14 15:14HCT4_rk3188_5.1(20161221).7z420.74 Mb2020-06-14 15:19