How to fix a phone not booting after flashing a custom ROM

How to install a custom ROM on Xiaomi Mi A2 Lite to flash additional zips please reboot recovery to switch to the update slot Please take a backup of the stock recovery which is currently ZIP file top dawg$ slot Restore the ability to install Magisk on the other slot on some AB devices

toshi slot To flash additional zips, please reboot recovery to switch to the updated slot Error installing ZIP file 'jasmine_sprout_stock_'