| Component | File Name Example | Function | | :--- | :--- | :--- | | AP | AP_A205FXXU_..._USER.tar.md5 | System, recovery, boot image | | BL | BL_A205FXXU_..._USER.tar.md5 | Bootloader (upgrades/downgrades) | | CP | CP_A205F_..._REV00.tar.md5 | Modem / Baseband (Calls, 4G) | | CSC | CSC_OXM_A205FOXM_..._USER.tar.md5 | Region settings (wipes data) | | HOME_CSC | HOME_CSC_OXM_..._USER.tar.md5 | Region settings (preserves data) |

This guide is exclusively for the SM-A205F/DS (dual-SIM variant). Using firmware for other models (e.g., SM-A205U, SM-A205G) will hard-brick your device.