Downgrading from 4.3 to 4.2.1 on 3GS

Question

Level 1

1 points

Downgrading from 4.3 to 4.2.1 on 3GS

I did the update to 4.3 and would like to go back to 4.2.1, Has anyone done it? From what I've read I download a copy of 4.2.1 of for the 3GS, which I Did ,place it on your desktop, while connected and in itunes hold the shift key and press restore, you will be able to browse to firmware, select the copy of 4.2.1 and let itunes restore. Also I downloaded tiny umbrella incase I got an error 1015.

Has anyone else done this?

Thanks

Posted on Mar 18, 2011 3:05 PM

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Answer 1

Mar 18, 2011 3:07 PM in response to flatlined

Apple do not support downgrading the OS so anyone who may know would not be able to say on this site. Probably best looking elsewhere or google.

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Answer 2

Tho0r76

Level 1

0 points

Mar 19, 2011 6:02 AM in response to flatlined

If you saved SHSH for 4.2.1 when was on apple servers you will be able to downgrade iOS,ONLY and ONLY.

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Answer 3

Mar 19, 2011 3:25 PM in response to flatlined

I know this forum doesn't support downgrading iOS, but Apple doesn't seem to care about the 4.3.1 problems. I have downgraded iOS using the "shift/restore". I downloaded the iOS I wanted and saved it to the desktop on my pc. Plug in iPhone and when iTunes starts, hit shift then click on restore. Chose the iOS and start the downgrade. If the phone freezes, use "tiny umbrella" to un-freeze it. This process has worked for more people than I can count. Good luck. Also, complaining to apple doesn't do any good. That's what these forums are for. Personally I won't ever upgrade my 3GS because it works fine like it is on 4.1

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Answer 4

Mar 19, 2011 4:00 PM in response to That Hootersguy

That Hootersguy wrote:
I know this forum doesn't support downgrading iOS, but Apple doesn't seem to care about the 4.3.1 problems. I have downgraded iOS using the "shift/restore". I downloaded the iOS I wanted and saved it to the desktop on my pc. Plug in iPhone and when iTunes starts, hit shift then click on restore. Chose the iOS and start the downgrade. If the phone freezes, use "tiny umbrella" to un-freeze it. This process has worked for more people than I can count. Good luck. Also, complaining to apple doesn't do any good. That's what these forums are for. Personally I won't ever upgrade my 3GS because it works fine like it is on 4.1

Sore subject mate. Just Google and you will find your answer.

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Answer 5

Mar 19, 2011 4:48 PM in response to flatlined

I'm still on 4.2.1 for Jailbroken purposes. What I can tell you is, you can't downgrade your Firmware. Apple just doesn't allow you to. One of the posters here is correct.

If you saved SHSH for 4.2.1 when was on apple servers you will be able to downgrade iOS,ONLY and ONLY.

If you never Jailbroken before then your SHSH blobs aren't saved and you cannot downgrade.

Personally I won't ever upgrade my 3GS because it works fine like it is on 4.1

Same here. I don't update when the day the FW comes out.

To the OP: And why would you wanna downgrade back to 4.2.1? Is there anything wrong with 4.3?

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Answer 6

Erikzen

Level 1

0 points

Mar 21, 2011 1:30 PM in response to Xx1Dustin1Xx

Just upgraded from 4.2.1. to 4.3 on my iPhone 3GS
Result:
Poor keyboard response
"stuck" keybord
frequently software is hanging
Can I download a non-jailbreak 4.2.1
/Torben

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Answer 7

roaminggnome

Level 10

106,365 points

Mar 21, 2011 1:37 PM in response to Erikzen

There is NO legit way to downgrade.

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Answer 8

Mar 21, 2011 5:09 PM in response to roaminggnome

Adding to that, there is no 'safe' way to downgrade it either!

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Answer 9

bozata

Level 1

0 points

Apr 5, 2011 4:48 AM in response to flatlined

I am also seriously considering downgrade to 4.2.1. Upgrade to 4.3 and immediately after to 4.3.1 resulted in poor battery life, slow response and ~30M 3G traffic, even if I am wifi connected (the infamous push.apple.com connection).
The sad part is that 4.3.1 includes security updates that I wanted to have, most notably for Safari. I hate when companies bundle fixes with new "features".
All in all, I am very disappointed by Apple - unfortunately, they turned into what M$ used to be.

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Answer 10

Jun 24, 2011 1:16 AM in response to flatlined

Looks like Apple doesn't leave anyone a choice but to jailbrake their phones. 4.3.3 is the worst update ever!!! DO NOT GET IT! It is full of bugs. I cannot even use my WIFI with it now. Why Apple cannot allow people to downgrade IOS!!!??? IOS 4.3.3 is simpy poo ⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠

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Answer 11

Jul 12, 2011 2:19 PM in response to flatlined

Over 3000 views and no real answers for this problem. Let's just all suffer with 4.3.3. No more I devices for me in the future... This is turning into a joke now! I want to restore my phone to factory settings at least!!!! Boooooooo!!! :-O paying £45.00 a month for a snail!!!

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Answer 12

Jul 12, 2011 2:21 PM in response to cutyoufirst

They took our jobs!!! :-) they durp pa derps!!!

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