Problem description

When the masking function is disabled in Stock OS 20251225 and Stock OS mod v3.9.3 systems, GB and GBC emulators may experience screen offset issues. This patch is specifically designed to fix this problem.

Instructions for use

1. Download patch files: 28xx_fix-251225.zip
2. After decompression, obtain the 28xx_pix-251225. sh file and the 28_fix-251225 folder, and copy these two files to the "Roms/APPS" or "Roms/PORTS" folder in the root directory of the storage card
3. After starting the system, run "28xx_pix-251225" in the corresponding APPS or PORTS category
4. After hearing the tone up prompt, it indicates that the patch installation is successful
5. After success, patch files and folders can be deleted