How to update the firmware for BR15 R2R: 

Click here

MCU firmware update video instrucion:

https://youtu.be/QdAj1te4G1Y 

Updated at 2026-1-12

BR15 R2R MCU firmware V106 download link: Click here

Changes and improvements in the new firmware are as follows :

1. Fixed the issue where the language would revert to Chinese after restarting when English or Japanese was selected during the first boot.

2. Miscellaneous performance improvements and bug fixes.