Downgrading 4.0 to 3.1.3?

[ravensfan55]

As easy as option+restore, and selecting the 3.1.3 software? Or is there an additional process needed? I'm not looking to unlock/jailbreak.

 

[iLiveUdie]

you would have to download the 3.1.3 software from a 3rf party website.

Then manually "downgrade" it

 

[ravensfan55]

you would have to download the 3.1.3 software from a 3rf party website.

Then manually "downgrade" it

I knew that, just wanted to make sure I know how to do it if things go nuts on me.

 

[wingnut8]

you would have to download the 3.1.3 software from a 3rf party website.

Then manually "downgrade" it

you can't just simply manually downgrade it. you'll get an error.

 

[unkn0wnsoldier]

It was only a matter of time...

 

[ravensfan55]

Didn't Apple stop signing the firmware updates after 3.1.2 so you can't downgrade?

 

[ct2k7]

Your devices is locked into testing mode.

 

[Ron21]

You can downgrade, just follow the instructions in the other thread.

 

[wingnut8]

You can downgrade, just follow the instructions in the other thread.

which thread?

 

[Ron21]

which thread?

https://forums.macrumors.com/threads/893015/

"here's what i did:

put 3g into DFU mode
restored to 3.1.3 in itunes
loaded irecovery on my mac and ran:
1. setenv auto-boot true
2. saveenv
3. /exit

held in sleep and home for 10 secs

phone rebooted and then activated (i have at&t). restored from last 3.1.3 backup prior to loading 4.0

viola, back to 3.1.3"