Crucial for your PC to communicate with the phone in a powered-off state.

The Oppo A37m can run custom ROMs reliably, provided the user applies device-specific fixes flashing. The MediaTek MT6750 platform is the primary source of compatibility issues, but with proper NVRAM backup, engineer mode tweaks, and patched vendor libraries, a fully functional custom ROM (especially Android 6.0–7.0) is achievable.

While official support is rare, the community has produced unofficial ports that can modernise this older hardware: LineageOS 17.1 (Android 10)

A "fixed" ROM typically refers to a modified firmware version where common bugs—such as Wi-Fi drops, camera instability, or battery drain—have been patched by the developer community.

Accidentally formatting or overwriting the critical preloader partition during the flash process.

Flashing the OPPO A37m is notoriously tricky due to its locked bootloader and strict partition checks. Most users experience issues because of:

Here are some of the most notable custom ROMs available for the device:

Select: , System , Data , Cache . (Do NOT select Internal Storage unless you want to delete your photos/music). Swipe to Wipe . Step 3: Flash the "Fixed" Custom ROM Transfer the downloaded ROM zip file to your SD card. Select Install in TWRP. Choose the ROM zip file. Swipe to confirm Flash . Step 4: Flash GApps (Optional)