to see if your specific carrier variant even allows unlocking—if it doesn't, no custom software can be installed.
Many GSIs require a quick fix to allow banking apps to work. Look up "Play Integrity fix" on the XDA forums for your specific ROM. motorola g31 custom rom link
Download stock firmware from Lolinet Flash with: to see if your specific carrier variant even
Your screen will change to a recovery-like menu saying "FASTBOOTD". Step 4: Flash the Custom ROM Erase your old system by typing: fastboot erase system motorola g31 custom rom link