Downgrade iPhone 3G

[teknologik]

Evening,

I have been trying to downgrade my iPhone 3G to the firmware 3.1.3. The baseband of my handset is 05.15.04. The current firmware is 4.2.1. I am using Windows 7 and can not get the handset out of recovery mode and get the iTunes error 1015. I have used RecBoot and iRecovery but nothing seems to be working. Any help much appreciated.

Cheers.

[Goof]

If you use Windows, then get iREB from ih8sn0w

Sent from my iPhone using ModMyi

[teknologik]

Thanks iGoof much appreciated. I will give that go.

Cheers.

[iPittsburgh]

If its a 3g you should be able to shift+restore to a stock 3.1.3

[teknologik]

I have downloaded iReb, done the shift and restore but the error message 1015 has appeared and the phone is in recovery mode is there any way to get it out of recovery mode to complete the downgrade.

[iPittsburgh]

Download tiny umbrella The Firmware Umbrella - TinyUmbrella and use the exit recovery option, it should kick it out of recovery.

[teknologik]

im going to try the tiny umbrella download now. thanks

[iPittsburgh]

let me know how it goes.

[teknologik]

The tiny umbrella works thanks for your help.

[iPittsburgh]

You're welcome.

[waldojosh]

is 3.1.3 better than 4.2.1 for an iphone 3g....
i know how to downgrade but i just dont know which firmware is better

[iPittsburgh]

3.1.3 has the best performance for an iPhone 3g

[waldojosh]

is it bad for an iphone if i downgrade and then upgrade again many times???

[iPittsburgh]

I dont see how it could hurt. You're just changing software

[waldojosh]

ill be downgrading right now my iphone 3g to 3.1.3....
which one gives the phone better battery tho?

[iYeow]

is it bad for an iphone if i downgrade and then upgrade again many times???

It is like reformatting your hard drive on your computer.

ill be downgrading right now my iphone 3g to 3.1.3....
which one gives the phone better battery tho?

remember to kick out error 1015

[waldojosh]

it just finish downgrading..... and i jailbroke it already but now cydia wont stop showing the "loading data " screen

[iYeow]

reboot again

[teknologik]

3.1.3 has the best performance for an iPhone 3g

Ever since I upgraded to 4.2.1 it has affected my iPhones performance massively. Downgrading has helped the performance issue no end. The only bug bear is you lose some of the nice features like auto caps and in the iPod the song loop is not there. Am I missing something here are they available in 3.1.3?

[waldojosh]

Caps lock is there on 3.1.3!!

Yea there are some features
the one that I will miss the most is the turn cellelar data off ...I'm on a limited data plan...