I have a problem which can't solve so far. I have a box based on S812, 8GB, 2GB with AP6330 WiFi. It had loaded the stock ROM which was based on Android 4.4.2. I rooted it and installed TWRP which I used to make a backup of the system before I try to install a different ROM.
The problem started when I tried to restore the original ROM. I loaded TWRP from the SDCARD and I restored the original ROM from a USB stick but when I tried to reboot I noticed that the blue light gone off and the box was bricked. I put the SD card back to the box and suddenly the box booted to the original ROM.
Now the only way to have back my original ROM is to have a bootable SD card always in the BOX.
How can I solve this problem ? Is there something wrong with the boot loader (u-boot). How can I repair the bootloader ?
I would really appreciate your help.
Kind Regards
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