Citat:
Ursprungligen postat av BaNff
Går det att nedgradera en iPhone som kör OS 4.0 beta 2 till 3.1.3 och sedan jailbreaka? Basebandet uppgraderas ju så det kanske kan bli lite problem eller vad säger ni?
MacLife verkar ha lyckats
http://www.maclife.com/article/howtos/downgrade_iphone_os_40
(inkluderar guide)
och citerar sista steget i deras guide:
Step 6 - Relax You’re Back to 3.1.3
You can now breathe a sigh of relief and pat yourself on the back. Your iPhone has now been safely restored back to its previous OS version (3.1.3). If you’re into jailbreaking, you can now re-jailbreak your device following the same process you followed before.
samt en notering ur kommentarerna på den sidan:
"Just wanted to let you know that this method still works even if you've upgraded to the new beta 2 of 4.0."