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Old Mar 13, 2012, 03:31 AM   #1
babybuuutch
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how to downgrade from 5.1 without shsh blobs on a 3gs

I'm trying to get back to 5.0.1 so I can get my iphone to work. I'm on a 3gs and upgraded to 5.1 but I get a no service problem after my jailbreak because I'm on the new bootroom. I'm thinking the only way to fix this is to downgrade to 5.0.1 and fix it that way.
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Old Mar 13, 2012, 04:53 AM   #2
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What is your current BB?
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Old Mar 13, 2012, 01:36 PM   #3
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what is your current bb?
6.15
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Old Mar 13, 2012, 01:41 PM   #4
ylerT
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Did you make sure you ran a "tethered boot" after doing the jailbreak and unlock?

As far as downgrading, with no blobs, you will not be able to get back to 5.0.1. Apple has been signing 4.1 for the 3Gs for quite some time and as far as I know, they still are. It's an older firmware version, but unfortunately, that may be your only option right now.
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Old Mar 13, 2012, 01:44 PM   #5
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In redsn0w make a custom NO_BB IPSW via Extra's/Custom IPSW


With that custom IPSW stitch your blobs/APticket combi to a new custom IPSW

redsn0w Extra's/SHSH/Stitch

With that second custom IPSW in iTunes do ALT-restore to restore
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Old Mar 13, 2012, 01:55 PM   #6
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Originally Posted by ylerT View Post
Did you make sure you ran a "tethered boot" after doing the jailbreak and unlock?

As far as downgrading, with no blobs, you will not be able to get back to 5.0.1. Apple has been signing 4.1 for the 3Gs for quite some time and as far as I know, they still are. It's an older firmware version, but unfortunately, that may be your only option right now.
on tiny umbrella it sats I have shsh for 5.0.1 but I can't use ifaith to downgrade because I'm on a mac. How can I get the 4.1 firemware?
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Old Mar 13, 2012, 02:19 PM   #7
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Originally Posted by babybuuutch View Post
on tiny umbrella it sats I have shsh for 5.0.1 but I can't use ifaith to downgrade because I'm on a mac. How can I get the 4.1 firemware?
http://www.felixbruns.de/iPod/firmware/

Use pwnagetool to make custom firmware though. Then alt restore to that firmware in DFU mode. A lot easier this way.
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Old Mar 13, 2012, 02:25 PM   #8
dhlizard
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If you want to restore to 5.0.1, you will need both 5.0.1 hashes and APTicket
Use Redsn0w to stitch both to a No_BB IPSW
Put your 3GS in DFU mode and use iTunes (shift+restore) to restore it
Host file must be pointing at Cydia

4.1 is still signed by Apple, so if that is your choice, download the 4.1 IPSW, DFU and shift+restore in iTunes
For this, host file must point at Apple
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Old Mar 13, 2012, 02:30 PM   #9
babybuuutch
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Originally Posted by saud0488 View Post
http://www.felixbruns.de/iPod/firmware/

Use pwnagetool to make custom firmware though. Then alt restore to that firmware in DFU mode. A lot easier this way.
Since I'm on a new 3gs bootroom i have to shsh my blobs with the custom fireware and I'm not sure how to do that.
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Old Mar 13, 2012, 02:32 PM   #10
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Originally Posted by babybuuutch View Post
Since I'm on a new 3gs bootroom i have to shsh my blobs with the custom fireware and I'm not sure how to do that.
You have 2 threads going, chech the other one
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Old Mar 13, 2012, 03:02 PM   #11
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Quote:
Originally Posted by dhlizard View Post
If you want to restore to 5.0.1, you will need both 5.0.1 hashes and APTicket
Use Redsn0w to stitch both to a No_BB IPSW
Put your 3GS in DFU mode and use iTunes (shift+restore) to restore it
Host file must be pointing at Cydia

4.1 is still signed by Apple, so if that is your choice, download the 4.1 IPSW, DFU and shift+restore in iTunes
For this, host file must point at Apple
I keep getting the 1600 error which is the one that I didn't go into dfu mode properly but I'm 100% sure I did using red snow.
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Old Mar 13, 2012, 03:04 PM   #12
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Quote:
Originally Posted by babybuuutch View Post
Once I do this for 5.0.1 if my phone is already jailbroken do i need to jailbreak it again?
When you restore, you loose the jailbreak
Just run Redsn0w to jailbreak
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Old Mar 13, 2012, 03:07 PM   #13
babybuuutch
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Originally Posted by dhlizard View Post
when you restore, you loose the jailbreak
just run redsn0w to jailbreak
thank you thank you thank you. I got it to restore

Last edited by babybuuutch; Mar 13, 2012 at 03:26 PM.
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Old Mar 13, 2012, 03:53 PM   #14
babybuuutch
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Originally Posted by dhlizard View Post
When you restore, you loose the jailbreak
Just run Redsn0w to jailbreak
My problem now is I get the no signal/service and ultrasnow won't work. When I jailbroke I only checked to download cydia should I have checked the other options? I'm on the new bootrom of a 3gs.
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Old Mar 13, 2012, 05:47 PM   #15
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Originally Posted by babybuuutch View Post
My problem now is I get the no signal/service and ultrasnow won't work. When I jailbroke I only checked to download cydia should I have checked the other options? I'm on the new bootrom of a 3gs.
You might have to reflash the iPad bb using redsnow.
Just select install iPad bb and uncheck everything else. Then you might need to remove and reinstall ultrasnow.
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Old Mar 14, 2012, 12:14 AM   #16
oBMTo
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Quote:
Originally Posted by dhlizard View Post
If you want to restore to 5.0.1, you will need both 5.0.1 hashes and APTicket
Use Redsn0w to stitch both to a No_BB IPSW
Put your 3GS in DFU mode and use iTunes (shift+restore) to restore it
Host file must be pointing at Cydia

4.1 is still signed by Apple, so if that is your choice, download the 4.1 IPSW, DFU and shift+restore in iTunes
For this, host file must point at Apple
What is the latest non-5.1 version still signed by Apple?
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Old Mar 18, 2012, 07:55 AM   #17
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Wink Solution

Quote:
Originally Posted by babybuuutch View Post
My problem now is I get the no signal/service and ultrasnow won't work. When I jailbroke I only checked to download cydia should I have checked the other options? I'm on the new bootrom of a 3gs.
While Jailbreaking your 3GS on ios 5.1, just select two option in redsn0w.

Install Cydia
Ipad Baseband

After making it tethered jailbroken. Install ultrasn0w from cydia, respring your device. Then open cydia again and add this new repo;

http://repo.iparelhos.com

After adding it, go to manage>sources>iparelhos.com and install the app ultras 0w fixer for ios 5.1
After installing respring your ios device.
Oh! You still getting the no service. Damn Man.
Just reinstall the ultrasn0w and you are back to life. Cheers
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