Originally a 1.0.2 phone, upgraded as unlock methods became available.
To 1.1.1, then 1.1.2 then 1.1.3 and now to 1.1.4.
Now ever since unlocking 1.1.3 JB(?) method it doesn't matter how many times I restore, update, downgrade bootloader, or Refurbish with Ziphone or iTunes, my iPhone SIM stays unlocked.
Even when it ends up on the "Emergency Calls" screen, I can make normal calls as the Australian Virgin Mobile (Optus Net) SIM stays unlocked.
Not really a problem, but I am wondering if it would be better if I could completely reset. Havent had Caller ID for the last couple of upgrades, basically since it stayed unlocked.