These are incremental or major version releases provided by the manufacturer. They maintain the factory look and feel while optimizing background processes, updating the MCU (Microcontroller Unit) for better car integration, and fixing stability issues like Bluetooth drops or audio static. B. Custom ROMs
: Usually configured with 1GB/2GB RAM and 16GB/32GB ROM. Platform : Manufactured primarily by XY AUTO (Gonghe). 2. Why You Should Update Your Firmware