3GS will NOT downgrade

**onlinegamesnz** · 09-08-2010, 07:10 PM

I have a 3gs and no matter what i do it will not downgrade. I downloaded the specific software for 3gs and itunes keeps giving me an error message firmware file invalid straight away.

Any ideas? Cheers

**drog92** · 09-08-2010, 07:41 PM

do you have you SHSH's?

**onlinegamesnz** · 09-09-2010, 05:37 PM

No. Are they files? I know how to ssh into the phone. But only if its jailbroken right

**iYeow** · 09-09-2010, 05:48 PM

Originally Posted by onlinegamesnz

I have a 3gs and no matter what i do it will not downgrade. I downloaded the specific software for 3gs and itunes keeps giving me an error message firmware file invalid straight away.

Any ideas? Cheers

Invalid usually means the wrong firmware, you can download from here :
iClarified - iPhone - Where To Download iPhone Firmware Files From
and it should be ipsw format, if it is downloaded as .zip or .rar, rename the ext from .zip to .ipsw.

**onlinegamesnz** · 09-09-2010, 08:59 PM

Yea this is the thing. Its the correct firmware. Its specifically for iphone3gs an its ipsw but no matter what i try it wont downgrade

**SnR** · 09-09-2010, 09:05 PM

If you have the new bootrom 3GS you need to have SHSH backups to restore to the previous firmware. Back up your SHSH with firmware upbrella:
The Firmware Umbrella
There are many guides on youtube on how to do this.

**iYeow** · 09-09-2010, 09:12 PM

What type of error are u getting?

**onlinegamesnz** · 09-09-2010, 09:23 PM

Its a popup error straight away when i try to restore. Its immediately comes up saying invalid firmware file

**iYeow** · 09-09-2010, 09:25 PM

Hmmmm, never seen that before, and you have the latest iTunes, right?

**i.Annie** · 09-09-2010, 09:52 PM

Perhaps its the wrong firmware for the device. Still wouldnt be able to do anything anyway without SHSHs.

**onlinegamesnz** · 09-09-2010, 09:56 PM

Yea latest itunes. Its real weird cus its straight away. Its almost like the firmware file is completely invalid. I click it it comes up instantly

**iYeow** · 09-09-2010, 10:28 PM

Have you tried on a different pc? It is possible some of your windows files or Itunes are corrupted.

**SnR** · 09-09-2010, 11:35 PM

Are you positive you are downloading the correct firmware and it isn't getting corrupted?

**j3st3r** · 09-10-2010, 12:12 AM

+1....redownload the firmware from the link yeow gave you, use either chrome, firefox, or opera, not Internet Explorer or Safari and try again, also as stated if you don't have shsh's saved locally using tinyumbrella or on saurik's server then you will not be able to restore to any firmware that apple isn't signing

**onlinegamesnz** · 09-10-2010, 12:21 AM

yes i know...but im not even getting as far as apple checking for a signed copy of the firmware.

ive tried it on another pc and same thing. this is the firmware im using.

http://appldnld.apple.com/iPhone4/06...6_Restore.ipsw

**j3st3r** · 09-10-2010, 12:25 AM

have you tried redownloading from the link yeow gave you or the download section of these forums

**nillam1** · 09-10-2010, 01:09 AM

I think you need to downgrade your iTunes to pre version 9.1 like 9.0.3, 9.0.2 or 9.0.1. I remember when I tried I had to downgrade iTunes 1st before I downgraded firmware. Also you will need to delete your iTunes library or copy & paste it elsewhere in your computer because an older version of iTunes won't work. It will say it does not recognize your library & iTunes won't open because this library was created by a newer version of iTunes! I think, DOH!

**nillam1** · 09-10-2010, 01:18 AM

Originally Posted by yeow202

Invalid usually means the wrong firmware, you can download from here :
iClarified - iPhone - Where To Download iPhone Firmware Files From
and it should be ipsw format, if it is downloaded as .zip or .rar, rename the ext from .zip to .ipsw.

Ditto & I had to change the ext. from .rar to .ispw. Also when I located the file in my downloads folder I had to click on unblock in the files properties. It kept saying it was blocked cuz it was from another computer.

**nillam1** · 09-10-2010, 01:21 AM

Originally Posted by j3st3r3

+1....redownload the firmware from the link yeow gave you, use either chrome, firefox, or opera, not Internet Explorer or Safari and try again, also as stated if you don't have shsh's saved locally using tinyumbrella or on saurik's server then you will not be able to restore to any firmware that apple isn't signing

Ya dude, without ur blobs on file u will be shshOL!

**Orby** · 09-10-2010, 01:22 AM

That link you're using for firmware (the appldnld.apple.com one) is the official source of the firmware--the file's good, odds are.

Does the error say "the device is ineligible for this build," does it say "the firmware file is not compatible" or does it say "invalid firmware file (or something to that effect)?"

I'm thinking the IPSW itself is not the problem here... we can have you run some tests on it to check the integrity of the file if need be.

Thread: 3GS will NOT downgrade

LinkBack

Thread Tools

Display

3GS will NOT downgrade

Posting Permissions