Hey everyone. Last week I ran an update in Cydia and the phone wouldn't get out of its boot loop. I tried several things via search on here - none worked. I had my SHSH saved via Tiny Umbrella. No matter what I would do to try and restore to 4.2.8... I would get an error. Error 1015, 20, 1600, etc etc. I followed guides on Redmond Pie, searched on here again - no dice. I needed a working phone since I was going out of town so I restored to 4.2.9. Now that I am back in town, I wanted to jailbreak the phone and get it squared away. First I tried to do the tethered jailbreak on 4.2.9 - but after its set up and I install anything in Cydia - SBSettings, Winterboard, etc.. I get stuck in a boot loop. So I went back to try and restore to 4.2.8 again.. no dice. I cant for the life of me figure out what Im doing wrong? Here are the steps Im following: -Launch Tiny Umbrella -Verify that the checkbox to set to Cydia is unchecked -Start TSS server -Launch into DFU mode (I have tried PWNd DFU as well) -Restore using 4.2.8 ipsw I always get to verifying the restore and then I get something like error 1600. I've tried from there to just unplug, plug back in, and run the restore again. No dice. Any help? Can I not roll back even though I have my SHSH saved?