Return to TWRP and perform a Factory Reset . This usually fixes issues caused by leftover data from the previous OS. Conclusion
If you want deep customization, this is the ROM to choose. It combines features from LineageOS, SlimROM, and OmniROM. Highly customizable UI, pre-rooted options.
Go to Wipe > Advanced Wipe and select Dalvik/ART Cache, System, Data, and Cache. oppo a37m custom rom fixed
LineageOS is the gold standard for clean Android experiences. The "fixed" versions for the A37m usually strip away the heavy ColorOS skin, significantly increasing the RAM overhead.
Move the ROM .zip file and GApps (Google Apps) to your SD card. Return to TWRP and perform a Factory Reset
Most builds now have fixed RIL (Radio Interface Layer) , meaning calls and data work perfectly. 2. Resurrection Remix
Power off your phone, then hold Volume Down + Power simultaneously. It combines features from LineageOS, SlimROM, and OmniROM
Before flashing any ROM, you must ensure your device is prepared. Skipping these steps is the number one cause of "hard bricks."