Support for more systems (like Neo Geo, Master System, and various arcade cores) that the stock OS can't handle.

Locate the CFW image specific to your version (V1 or V2).

Once the new firmware is installed, you can further enhance the experience:

Some custom builds utilize a modified OpenDingux kernel. This option provides a robust file management system and excellent retroarch-core performance for 8-bit and 16-bit consoles. Step-by-Step Installation Guide

Installing custom firmware on the Go to product viewer dialog for this item.

I can give you exact troubleshooting steps or recommend the best firmware link for your exact model. Share public link