[HOW TO] Downgrade 4.3 to 4.2.1 & Jailbreak (ONLY IF 4.2.1 SHSH Saved)

[Hardcoredrummer1996]

Hey, ive done the steps 3 times already.
on my 4th

And for somereason my phone wont activate (3Gs)

fix?

[ro0oney]

Hey, ive done the steps 3 times already.
on my 4th

And for somereason my phone wont activate (3Gs)

fix?

What exactly doesn't activate? is ur phone on DFU mode? recovery? or the whole steps just didn't work for u

[iphonogasm]

i have exactly the same problem lol
i also have vodafone!

The jailbreak worked fine, then i restored from backup but the phone reboot in the middle of the restore process...

the phone booted again and everything seems fine, asked for the SIM code, etc...

but can't use data or calls and sms...

Dnt restore from backup

[skunk1234]

Tried again used ultrasOw,no difference still cannot use phone it asked for the simcard password put it in still no phone had to return to 4.3

[iphoneac]

thanks alot for the tips! it works!!!

[Dfuse06]

i did it like this


1-Launch the iTunes software, restore iOS 4.2.1 with the ALT key (Shift for Windows) + click on "Restore" in iTunes.

2-Restoring runs but will crash at 3 / 4.


3-Wait for the error 1013 via iTunes.

4- Close iTune

5- Now your in Mode recovery "Cable iTune"

6-Press the button (above) and Home (down) until the expiry of your iDevice.

7-Then immediately go into DFU mode , press the ON button 3 seconds and then ON + HOME for 10 seconds, then HOME button just 17 ​​seconds.

8- Launch the software jailbreak Greenpois0n .

9-Follow the steps in the guide after switching to jailbreak DFU mode.

10-Your iDevice then jailbroken 4.2.1 under iOS then connect to iTunes to finish its activation following the restoration of previously iOS 4.2.1.

worked fine for me

[skunk1234]

Fixed the phone up downgraded from the trouble I had with 4.2.1 to 4.1 all is well,thanks for any help

[thesaltydalty]

I know this is my first post but does anyone know if I have the 4.2.1 SHSH saved on one ipod is there anyway to use those to downgrade my friends ipod, which is stuck on 4.3.2? Thanks for helping a noob.

[Simon]

No, SHSH are device specific

[thesaltydalty]

ok, thanks anyway

[rivnygfan11]

tinyumbrella says my iphone 3gs is "Sending enter recovery request to _____ iPhone." And its stuck there help please!

[iYeow]

tinyumbrella says my iphone 3gs is "Sending enter recovery request to _____ iPhone." And its stuck there help please!

What is your problem, specify your device , your firmware and what you are trying to do.