How to restore 3.1.3 from 4.0 on iPhone 3G ??

[Minkai]

Hello everybody,

I upgraded my iPhone 3G to the 4.0 when it was released but now the battery drains and last only 2 hours...
Any advices on how to restore 3.1.3 without jailbrake it?

Thanks in advice

 

[spoonk7]

Have you check on itunes yet? There is a "Restore" option on there. Under the tab Info.

 

[spoonk7]

You can do it here:
http://www.felixbruns.de/iPod/firmware/

 

[kernkraft]

http://cnettv.cnet.com/downgrade-your-iphone-3g-from-ios-4/9742-1_53-50090954.html
It works with 3GS models too.


But if you have doubts:
http://upcoming.current.com/search?q=How+to+Downgrade+Your+iPhone+3G[S]+from+iOS+4+to+iOS+3.1.3 Especially this one:http://lifehacker.com/5572003/how-to-downgrade-your-iphone-3g[s]-from-ios-4-to-ios-313

Follow the links!

 

[kuato]

I just restored to 3.1.3 for my 3G because 4.0 was draining my battery as well. It was a great decision! I used this guide.

http://lifehacker.com/5572003/how-to-downgrade-your-iphone-3g[s]-from-ios-4-to-ios-313

It worked perfectly. I would highly recommend it!

 

[benji888]

I just restored to 3.1.3 for my 3G because 4.0 was draining my battery as well. It was a great decision! I used this guide.

http://lifehacker.com/5572003/how-to-downgrade-your-iphone-3g[s]-from-ios-4-to-ios-313

It worked perfectly. I would highly recommend it!

I also used the same link to go from 4.0.1 to 3.1.3 and it worked great, just follow the instructions.

However, have you tried turning off spotlight search? I hear it helps make things faster...maybe it will help w/battery...worth a try anyway.


I personally had wifi quit on me after updating to 4.0.1...long story short I went to an Apple "genius" and now have a new iPhone 3G (w/3.1.3 on it). I won't update until 4.1 comes out and I hear it runs well on 3G.

 

[warrenpaul]

i did this the other day, pretty simple on the 3g, just download the firmware and when done, hold "option key" (on mac) and click restore in itunes, not sure about xp think its ctrl?

and select the 3.1.3 firmware you downloaded, ill put the link up later for the firmware as its on my macbook at home