RG505 latest version V1.21

1.Optimize system 

 2.Fix bugs （about battery）

Google drive：https://drive.google.com/file/d/1A_fA8ZTcy2N6aZGqkTBH_lnEob5CUNYr/view?usp=share_link

RG505 1.18b offline system update package

https://drive.google.com/drive/folders/1RLXsROGKH-mJt4Bn1CJEEHTv-w4Oyq_q?usp=share_link

Please read Anbernic RG505 Android 12 Upgrade Guide in google drive

Details:

1.Optimize system  2.Fix bugs.  3. Optimize Joystick experience