Android Stock ROM vs Custom ROM: Which Is Best for Flashing?
Install TWRP Recovery on your Galaxy A5. This custom recovery is essential for flashing ROMs. Phase 2: Installing the ROM via TWRP samsung galaxy a5 custom rom
Based on stability, features, and community support from XDA Developers, here are the best choices. Android Stock ROM vs Custom ROM: Which Is Best for Flashing
Hold the buttons simultaneously to enter Download Mode (for newer variants, use the volume combinations specific to your year). Press Volume Up to accept the warning. and community support from XDA Developers
(Optional) If your ROM requires a separate GApps package, return to the install menu, select the GApps .zip , and flash it immediately after the ROM.