Android 11 OS Update Instruction for Family of Products on 6375

Hi, I've flashed the ROM and after it finished It asked to be to choose slot A or B, be default B was selected and there were options for a

2 Turn OFF UPDATE RECOVERY in DEVELOPER OPTIONS

tomb raider slot Error applying update: 7 To flash additional zips, please reboot recovery to switch to the updated slot

totem towers slot A clean install is recommended for any new ROM that isn't just an update to your existing one (ex: going from SlimKat to CM or from CM 10 to CM