512MB RAM is the bare minimum for Android TV boards. Expect sluggish performance if multitasking or using heavy apps like Netflix or YouTube at high resolutions.
This rar file usually contains the bin/pkg file needed to revive "stuck on logo" or "boot loop" issues common in these universal boards.
Use a high-quality USB drive formatted to FAT32 .
Extract the .rar package and copy the firmware file (usually allupgrade_ms338_sos.bin or similar) to the root directory of the USB.
Generally supports HDMI, USB, VGA, and built-in Wi-Fi, making it a popular choice for DIY TV repairs or monitor conversions.