Intressant artikel i sammanhanget hos TUAW, av ingen mindre än Erica Sadun: How to relock your iPhone before the firmware update
Here's my first go at a re-locking guide. I'll update and confirm as time and feedback permit. This method in no way guarantees that your iPhone will survive the update after being unlocked. If you're risk adverse, you may want to wait a day or two for these instructions to get debugged. And be aware there may be a lock/unlock limit set by hardware.
Där finns också svar på några vanliga frågor:
"What about restore?" -- Unlocks survive restore. It's a different part of your phone.
"Will this affect Jailbreak or 3rd party apps?" -- No but you still may have to restore before the next firmware update.
"Will the next firmware update lock me out from jailbreak and 3rd party apps?" -- We have to see but...likely yes.
"Do I have to update my iPhone when the next firmware is released?" -- No. But then you're kind of sticking your iPhone into a time warp. Everything else will change but not your iPhone. And I don't see there being a parallel development effort on the part of hackers.