Apple iOS iPhone 4 Downgrade without SHSH - Geekgrade Beta - ExtM

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jonthedit

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This thread just serves to show that Kyouhei's iPhone 4- which he only had SHSH blob 6.1.3 - can be downgraded to firmware iOS 4 - 6 without blobs. This applies to ALL A4 devices.
The difference here is the current GeekGrade firmware locks up the device after a period of time.
MkAZK0r.jpg

2r0RM4W.jpg
XVtJaVM.jpg

Kyouhei can verify the serial number. - here take a PM from when I was asking about the phone before buying it -
XQEOTue.png

bowser - you were interested.
Once I get the kinks worked out I will release my personal version of the firmware- with fixes and Cydia for iOS 4 and 6.1.3.
 
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bowser said:
Hello, were you able to finish this? Would love to upgrade to iOS 6 :)
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Haven't worked on it. Been more working into a different field sadly. What phone/model?
There were a few quirks with using the modified firmware- most could be remedied though.
 
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bowser said:
iPhone 4 on iOS 5. Factory unlocked.
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Oh. Actually I was referring to CDMA/GSM and which revision. If you have no idea what I am talking about a quick google search will help you identify which iPhone 4 type you have.

Have you saved your iOS 5 blobs? Are you on 5.0? 5.0.1? 5.1? 5.1.1??
 
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jonthedit said:
Oh. Actually I was referring to CDMA/GSM and which revision. If you have no idea what I am talking about a quick google search will help you identify which iPhone 4 type you have.

Have you saved your iOS 5 blobs? Are you on 5.0? 5.0.1? 5.1? 5.1.1??
Click to expand...
Oh oops :P

I have a 16GB iPhone 4 GSM (NOT rev A) on 5.0.1. I've got the blobs for 5.0.1 and some 5.x betas. No blobs for 6.x
 
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bowser said:
Oh oops :P

I have a 16GB iPhone 4 GSM (NOT rev A) on 5.0.1. I've got the blobs for 5.0.1 and some 5.x betas. No blobs for 6.x
Click to expand...
Hey great news for you!
@beehindowngrade [twitter] has made progress and plans on enabling downgrading for all 32-bit devices to any iOS firmware without blobs!
I successfully used their beta 0.4 on my iPad 2 [only iPad 2 and iPhone 4S supported ATM] and was able to downgrade to 6.1.3 without blobs!!
 
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