How to Downgrade An iPhone 3G to 3.1.3?

I have an iPhone 3G running iOS 4.1. I think my iPhone is getting to slow. How do i downgrade it?

asked Nov 01 '10 at 23:31

Good Question! I'm still on firmware 3.1.3, and I don't see improvements to make me want to upgrade. It would be good to restore to fw 3.1.3 if something were ever to happen.

(Nov 02 '10 at 17:04) r0bErT4u

3 Answers:

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Here is the information you will need http://reviews.cnet.com/8301-13727_7-20013523-263.html

answered Nov 02 '10 at 00:00

kevin ♦♦
35.7k●160●316●589

I tried this and it didn't work. It gave me an error message everytime.

(Nov 02 '10 at 13:24) Kevin Mortiere

It gave you an error message because it failed to "upgrade" the baseband, when actually it's attempting to downgrade it, but baseband downgrades are it possible. Use iRecovery, iREB, iRec, or TinyUmbrella to boot your phone out of recovery mode.

(Nov 02 '10 at 13:29) AppleHack23

It is saying the firmware file is not compatible.

(Nov 02 '10 at 13:49) Kevin Mortiere

RecBoot won't work. I can't get it out of recovery mode after i did it.

(Nov 02 '10 at 14:00) Kevin Mortiere

Use TinyUmbrella, that's probably the easiest for you.

(Nov 02 '10 at 14:04) AppleHack23

Okay so i got it to 3.1.3. What if i want it to go to 4.0.1? I like to look more of 4.0.1 and i want to jailbreak it at 4.0.1. I've been trying to do that and it says the firmware is still not compatible.

(Nov 02 '10 at 14:14) Kevin Mortiere

Never Mind I Got It

(Nov 02 '10 at 14:31) Kevin Mortiere

showing 5 of 7 show all

0	You can't do it without saving SHSH blobs when being jailbroken in 3.1.3. answered Nov 02 '10 at 16:45 Ebotman16 771●67●73●83 Wrong. The iPhone, iPhone 3G, iPod touch, and iPod touch 2g do not have the ECID SHSH downgrading system. (Nov 02 '10 at 19:03) AppleHack23

0	Download the Firmware from the internet and hold I think shift on PC and option on mac (please check that). Then it will ask you to browse for the firmware you want. Select the 3.1.3 file and restore! answered Nov 02 '10 at 19:17 ryebread761 7.5k●216●241●322

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