Hi, glad to share the firmware for M8S+ TV BOX
Download here: M8S+ AMLOGIC S812 FIRMWARE
1, Select “File”-”Import image” to load burning image package
2, Select burning configuration, then click “Start”
3, Before close the tool, you need to pull out devices the click “Stop”
Please be noted, this firmware is fit for SD card upgrade.
You will find 4 file folders after unpacking , 1 for Android 4.4 SD cared upgrade, 1 for Android 4.4 PC upgrade, 1 for Android 5.1 SD cared upgrade and 1 for Android 5.1 PC upgrade, please check the image below:
Choose a suitable one for your device, Good luck!