Oppo A37m Custom Rom Fixed

Before we present the fixes, you need to understand the why . The Oppo A37M runs on ColorOS (based on Android 5.1 Lollipop). When developers port Android 6, 7, 8, or 9, they face three core problems:

Select "Firmware Upgrade" or "Download Only" from the dropdown. Power off your Oppo A37m. Volume Up and Volume Down buttons while connecting it to your PC via USB. oppo a37m custom rom fixed

Ensure you flashed the correct GApps version (ARM64) immediately after the ROM. If it gets stuck on the logo, go back to TWRP and Format Data (the option where you type "yes"). Before we present the fixes, you need to understand the why

Connect the phone to your PC via USB while holding the buttons. Power off your Oppo A37m

Patched RIL (Radio Interface Layer) so dual SIM and 4G LTE work perfectly.

Flashing a "fixed" ROM on the A37m requires a specific technical path because the bootloader is often locked by default: OPPO OPPO A37m - Geekbench Browser