Did anyone actually unlock, relock and after that sucessfully update using either OTA or the Companion?

I can't try OTA myself. Although I'm on 7.0.A.1.303 I believe my device isn't completely free. It's optically/visually totally unbranded but a google search after my SI 1265-1624 revealed some russian site or so where I could spot the name of my provider in conjunction with the phones name. So I guess it's at least somehow provider tied (yet sim unlocked/sim free) as I also haven't got any update notification yet.
Current:
Sony XPERIA Z (C6603) locked, rooted stock 4.1 | Samsung Galaxy S3 rooted stock 4.1
Asus Transformer Pad (TF300T) locked, stock 4.1 | Asus Transformer Pad (TF300TG) locked, rooted stock 4.0

In Repairs: Sony XPERIA T
Deprecated: Samsung Galaxy Note, HTC DesireZ, HTC 7, Nokia N900, HTC Magic, HTC Touch Pro, SonyEricsson XPERIA X1, HTC Touch Cruise, HTC Canary (Orange SPV) et al.

Quote:
Originally Posted by Ryland Johnson View Post
It is clear that this phone has an awful lot more artificial intelligence than some of its owners.