Default 4.3 and Sim Unlock

Been reading the forums and realize it is not possible to go from 4.3 back to 4.1.1 to unlock via service menu.

My question is this, if I root 4.3 can the phone be Sim unlocked that way? I'm asking on behalf of some coworkers.

Thanks for reading.

Sent from my GT-I9505G using XDA Premium 4 mobile app
GO CARDS! #L1C4