Post: Question downgrade 4.3 to 4.2.1
03-24-2011, 02:02 AM #1
IMMA B3AZT
Bounty hunter
(adsbygoogle = window.adsbygoogle || []).push({}); how do u do that when i downgrade in itunes it says incomptible ipod touch 4g
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03-24-2011, 02:11 AM #2
cgs18
The Old NGU iDevice Guru
Originally posted by IMMA
how do u do that when i downgrade in itunes it says incomptible ipod touch 4g


Well 1st u need ur shsh blobs saved.. Which if u never jailbroke before u don't have... :(

Other then that... Um welcome to NGU seeing that was ur 1st post.. Smile
03-24-2011, 10:55 AM #3
Yes you have to have your SHSH blobs saved from 4.2.1. If you have never jailbroken you will not have these.

The following user thanked Connor for this useful post:

cgs18
03-25-2011, 08:51 PM #4
D@ EnVvY!
OMG did you read this?
You can save SHSH blobs with TU even if you are not jailbroken, but I guess you haven't done that?
03-26-2011, 03:37 AM #5
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x iJB x
Guest
SHSH Blobs are required for iOS 4.2.1.

SHSH Blobs are basically a cached version of the server response Apple gives when you ask to downgrade. When a new iOS update is released you cannot downgrade without them. However if you saved them, they mimic Apple's server telling your computer "Yes you can downgrade". This cannot downgrade your baseband if you have iPhone though.

You can save SHSH Blobs in a variety of ways. One is using TinyUmbrella to save them. It's available for Windows, Mac & Linux, just google for the homepage.

You can also use a Cydia tweak called iSHSHit to save your SHSH Blobs on your iDevice and then email them to yourself.

Without SHSH Blobs, you cannot downgrade.
03-26-2011, 03:42 AM #6
Originally posted by x
SHSH Blobs are required for iOS 4.2.1.

SHSH Blobs are basically a cached version of the server response Apple gives when you ask to downgrade. When a new iOS update is released you cannot downgrade without them. However if you saved them, they mimic Apple's server telling your computer "Yes you can downgrade". This cannot downgrade your baseband if you have iPhone though.

You can save SHSH Blobs in a variety of ways. One is using TinyUmbrella to save them. It's available for Windows, Mac & Linux, just google for the homepage.

You can also use a Cydia tweak called iSHSHit to save your SHSH Blobs on your iDevice and then email them to yourself.

Without SHSH Blobs, you cannot downgrade.


Yeah this is correct but also to the poster of this thread you need to also have Official(OFW 4.2.1) iPod 4th Gen. Firmware. And you will need something like TinyUmbrella (You must login or register to view this content.) <- official site and start the server and restart itunes and then restore your iPod after you put it into DFU mode (hold home and power buttons until it turns off then release power button) plug into computer and restore with server started.

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