So I was working on some stuff the other day for iOS 5, decided to downgrade back to 4.2.8...... couldn't.... lost my jailbreak. Stuck on 4.2.10 with no way to downgrade currently.
I have my SSHS Blobs, but i am getting so many iTunes errors, i'm about ready to just stay on 4.2.10 :/
You must use the fixrecovery43 you can download from the site of Tiny Umbrella, put in DFU and run it if the fix you the missing file error zlib1.dll the download from the Internet and put it inside the folder fixrecovery
to make a downgrade of iOS 5, you must first uninstall itunes for the developer after install itunes normal(version normal), maybe this gives you the error?
I just downgraded this morning from iOS 5 to 4.3.2. After 3-4 hours of failing i realized that the box in TinyUmbreally "Update iPhone 4 Baseband" wasn't ticked on. After doing so i downgraded with no problem and jailbreak'ed using jailbreakme.com
Ugh that sucks... but as long as you have your SHSH saved, you should be ok. Are you putting your phone in DFU when you start the restore process? If you phone gets stuck in recovery mode, try jailbreaking it with greenpois0n - that's what worked for me. I'm still on 4.2.1...
I'll be releasing some skins/mods very soon
After doing so i downgraded with no problem and jailbreak'ed using jailbreakme.com
I am working on some iOS 5 mods/skins.... Really just going to town haha
Lots of stuff is unstable though thats the only reason i tried to downgrade