Originally Posted by swapk007
Will custom rom change the values inside the efs folder if yes is it possible that we can retain the original efs values by using earlier backed efa folder
2. if the folder is created as image it is easier. Copy and paste often won't work.
Upgrading stepwise is the safest way to keep all fine (GB, ICS, JB/CM10.2, KK). Upgrading to 4.3/CM10.2 will resize the partitions so best way to downgrade again beyond 4.3 is to flash stock GB with PIT file and repartition with Odin.
tetakpatalked from the legendary i9000