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

[jonthedit]

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.

Spoiler: otherimages

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

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.

 

[bowser]

Hello, were you able to finish this? Would love to upgrade to iOS 6

 

[jonthedit]

Hello, were you able to finish this? Would love to upgrade to iOS 6

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.

 

[bowser]

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.

iPhone 4 on iOS 5. Factory unlocked.

 

[jonthedit]

iPhone 4 on iOS 5. Factory unlocked.

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??

 

[bowser]

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??

Oh oops

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

 

[jonthedit]

Oh oops

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

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!!