Patch Unlocking - cid 49 51 - copy from another phone

[onlyone]

So you make a backup of the main portion of your phone, which is patch unlocked (or backup just like rest file but bigger in size - almost all main).

If you have another phone, same model and with same firmware in it, and then you flash this backup file, shouldn't this second phone be also unlocked?
Who can test this to see if it works?
It's main and not gdfs or something dangerous so I really think this should work