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Thread: downgrade from 5.1
03-20-2012, 02:45 PM #1downgrade from 5.1
I am trying to downgrade my iPhone 4 from 5.1 firmware to 5.01 or 5.0. I am using redSn0w to create a No_BB custom ispw.
I keep getting this weird error message that makes no sense to me. "This option can only be used for iPhone 3GS or iPhone 4 ISPWs"
But I have an iPhone 4... so what am I doing wrong.
The file is iPhone3,3_5.01_9A405_restore.ispw
I had my phone jailbroken for a while, and then I restored it because I was having some software issues, and I was too lazy jailbreak again... and now, my desire for a modified phone is back, but I can't do much with 5.1. I am trying to downgrade so I can do fun things.
any help is much appreciated.
03-27-2012, 12:12 PM #2
I am also having this issue. I am trying to downgrade from 5.1 to 5.0.1.
However, my file name is iPhone4,1_5.0.1_9A405_Restore.ipsw
I am currently running on the tethered jailbreak of 5.1.
03-27-2012, 12:20 PM #3
Do y'all have the shsh blobs saved if ya don't you will not be able to downgrade to that.
03-27-2012, 12:25 PM #4
I was under the impression (and quite possibly the wrong impression) that the SHSH blob was saved automatically by redsn0w when I did my jailbreak. I used TinyUmbrella to locate my SHSH from Cydia. Under TinyUmbrella, it states that I have two saved SHSHs.
1. iPhone4CDMA 5.0.1 (9A405)
2. iPhone4CDMA 5.1 (9B176)
Thank you for a speedy reply.
03-27-2012, 02:11 PM #5
03-27-2012, 02:17 PM #6
03-27-2012, 02:20 PM #7
1. Backup my device (done)
2. Download latest version of TinyUmbrella (done)
3. Run TinyUmbrella (done)
4. Using TinyUmbrella, press 'Start TSS Server' and choose my SHSH. I chose my 5.0.1 SHSH but I get an error. My error reads, "The iPhone "Curtner's iPhone" could not be restored because the firmware file is not compatible."
I hate feeling so ignorant when doing something so simple. Is the file I need to select the iPhone4,1_5.0.1_9A405_Restore.ipsw file? Or should I be looking for something else?
Thank you for guidance!
EDIT: Susty...How would I have obtained an iPhone 4S GSM SHSH while jailbreaking with an iPhone 4 on Verizon? Am I SOL?
03-27-2012, 02:21 PM #8
For your phone, you want one called
03-27-2012, 02:28 PM #9
My *.ipsw file says 4,1_5.0.1_9A405
My *.shsh file says 3484041129230-iphone3,3-5.0.1.shsh
However, I cannot select the *.shsh file when shift+clicking restore in iTunes when using TinyUmbrella. Please tell me I'm not overlooking something so incredibly stupid.
03-27-2012, 02:31 PM #10
You have to stitch the Ipsw to the firmware first, however your using THE WRONG FIRMWARE You have one for an iPhone 4S and you have an iPhone 4 CDMA... This is why you have the error about being for the wrong phone.
03-27-2012, 02:33 PM #11
Well that's no good. Is there a way to get the correct firmware now that I'm already 5.1 and they're done signing 5.0.1 (I don't even know what that means).
And also, how would I have gotten the iPhone 4S firmware to begin with if the only way I obtained my SHSH is through jailbreaking?
03-27-2012, 02:34 PM #12
You've obtained an iPhone 4S ipsw, you HAVE iPhone 4 shsh's...
You need the correct Ipsw for the correct phone as the iPhone comes in gsm & CDMA versions... Neither are compatible with the other.
03-27-2012, 02:37 PM #13
I understand what I have and what I need. My concern now is whether or not the file I need is still obtainable. Do you know if it is?
03-27-2012, 03:26 PM #14
03-28-2012, 12:59 PM #15
I now understand that I somehow obtained an iPhone 4S firmware that I don't need since I use an iPhone 4.
I stitched my 5.0.1 SHSH file to my 5.0.1 IPSW that you linked me. I ran into a few errors along the way and navigated through a few others. In the end I was unable to downgrade my device. I'm sure it is possible, but working 75hrs a week makes it hard for me to find the time to sit with my phone and figure it out on my own. I will work on it this weekend.
Again, I thank you for your help.
03-28-2012, 01:08 PM #16
04-11-2012, 06:33 PM #17
Hello can you help me aswell?
I Have a iphone 4 running GSM I think , (if thats the standard) and I want to get 5.0.1 on my phone and jailbreak it.
Should i first upgrade to 5.1 then downgrade to 5.0.1 or can i upgrade 4.1 to 5.0.1 ?
whats the file url for the 5.0.1 GSM at the apple servers?
Will i lose my base band if i upgrade to 5.0.1 and jailbreak it? (its locked now)
But i have jailbroken it now and it works (with service and base band)
04-11-2012, 08:42 PM #18
Do you have the blobs for 5.0.1? And what baseband do you have. Sounds like ya may have to perserve that baseband.
04-12-2012, 10:58 AM #19
What are blobs? and how i get them?
Device Model: iPhone 4
Installed Firmware Version: 4.1
Installed Baseband Version: 02.10.04-ICE_2_8
04-12-2012, 11:05 AM #20
Tiny umberalla will show ya the blobs ya have saved