HC Series Upgrade totorial
(The detail steps are as follows)
Please prepare a USB flash drive, and format the USB flash drive to FAT32 on your computer.
Download the firmware from below link. The firmware name is <update_hc>.zip
Copy the firmware <update_hc>.zip to the USB flash drive root path.
Connect the USB flash drive to the device, as picture shows.
Follow steps Settings-System-About device-Local Update-Start Upgrade
Note: The device will reboot server times itself during the updating, do not cut the power when updating. It will take about 5 minutes to update.
Some APK will disappear after updating, you can download some useful APK from below link.