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

slot: B Devices on super may not mount until rebooting recovery To flash additional zip please reboot recovery to switch to the update slot

Guide: how-to-flash-any-custom-rom-via-twrp-recovery In this video, we

tornado slot Flashing AB zip to inactive slot: B Step 12 Step 22 To flash additional zips, please reboot recovery to switch to the updated slot

top slot login And if it is going , then simply flash the stock rom zip file through custom recovery by wiping cache etc