The correct command isHi so I broke b_partition of the device need help/guide in getting the required files to flash to fix the issues. Using the fastboot --set-active b keep showing unknown option. Likewise flashing the stock rom using QFIL doesnt fix the issues . Not sure what i did wrong along the way.... Also tried flash fastboot method with the stock rom files doesnt help too.
fastboot set_active b.
QFIL would actually fix the issue easily as it reflashes the partition table.