Ok, so i'm stuck on the apple logo and itunes won't recognize my phone and when i go into DFU mode, itunes says it can't communicate with the itunes server, therefore not recognizing my phone. I have the 4.2 iOS downloaded to my hard drive. Is there any way i can update without itunes? Someone PLEASE help.
We'll need a few more pieces of information to be 100% certain, if what I suggest in a minute doesn't impact you then please respond back with the following:
1) iTunes version
2) What happened to get you into the bootloop?
That said, if it fails when contacting the Apple server, there is really only one or two causes:
1) You've made modifications (or run programs that have made modifications) to your hosts file at c:\windows\system32\drivers\etc\hosts (for Windows machines) and iTunes is unable to connect to the server to verify due to those hosts changes.
2) You're attempting to restore a version of iOS that has a soft-SHSH check and you are using TinyUmbrella to block the baseband upgrade, in which case this is expected behavior and you can kick the device out of recovery mode by running redsn0w and clicking 'just boot tethered now'.
Without any other information though, we're kind of at an impasse with being able to troubleshoot. If what I've mentioned above doesn't sound like it would be accurate for your situation, please provide as much detail as you can and we'll take another crack at it.
I figured out why itunes can't access the server....i am at work and my company has a webguard filter that blocks certain websites. Is there any way around that? I have the firmware on my hard drive. I will be stuck here without a phone for a week (because i work for 7 days then go home for 7 days) if i can't get my phone back up and running. If you can help, I would greatly appreciate it.
I am using iTunes version 10 and when it went into bootloop, i had just installed an app from cydia and my phone was respringing then all of a sudden it just rebooted and continued to reboot over and over.
3.1.3 on the 3G doesn't have the SHSH check - so you could restore to that iOS version.
Otherwise, you need to be able to remote control another computer outside of your work firewall. Download and run tinyumbrella - make a custom device with the ECID from your 3G
Request the 4.2.1 SHSH - then identify the file saved under .shsh on the remote computer.
Email that 4.2.1 shsh blob to your work machine. Copy it to the same .shsh directory and run tinyumbrella - verify it recognises the shsh and try again with the tinytss server.
what about iOS 4.1 ? does it have an shsh check?
4.1 has a soft-shsh check on the 3G, every iOS version from 4.0 requires SHSH.
Originally Posted by MystikFix