Access newer Android versions even after Samsung stops official updates.
You will need a custom recovery like TWRP (Team Win Recovery Project) to install the ROM files. How to Install a Custom ROM on Samsung A04s (GSI Guide) samsung a04s custom rom
The bootloader is the code that runs when you turn on your phone. You must unlock the bootloader to install custom software. Access newer Android versions even after Samsung stops
Download and install the official Samsung USB Drivers on your Windows PC. perform a "Wipe" (Dalvik/Art Cache
In TWRP, perform a "Wipe" (Dalvik/Art Cache, System, Data, Cache).
Based on community feedback, here are the most stable custom ROMs for the A04s as of 2026: