Unfortunately I'm having issues with my iP4 and I think I may have to restore. The glitch yesterday with iCloud and MobileMe (it went down/had issues, causing many to get username/password errors on iCloud for a couple of hours). Now anytime I try to use Mail.app, or access the settings for Mail on my iP4 it hard reboots. argh.. It's been quite some time since I've gone through the restore and/or JB process, or even looked diligently here at the 'iPhone hacks' section. I briefly upgraded to 4.3.3, but then downgraded back to 4.2.1 (early when 4.3.3 came out). Been happy with 4.2.1 for quite a while. My current iP4 setup: 1.59.00 baseband, 4.2.1 iOS. Mac running 10.7.2 with iTunes 10.5. Have SHSH blobs saved for all versions in between 4.0.1 to 4.3.5. No SHSH blobs for 5.0 or 5.0.1..... I'm not oblivious to searching and Googling. I've found that my options are....restore to 4.2.1 or 4.3.3 (and a few revisions in between) and I can stay untethered. Or, I could do 4.3.5 (tethered) or maybe even 5.0.1 (tethered). Am I interpreting this right??? On the iP4, I could have 1.59.00 baseband, use 5.0.1, still jailbreak (but it'd be tethered). It would be great if I could get to 5.0.1 JB'n (even if tethered), so that I could take advantage of the iCloud features. Even if it means I'd lose the unlock option on this iP4. I just bought an iPad 2 with AT&T GSM---and now seriously considering hanging on to this iP4 until the iP5 or whatever it is (since the iP4S is just a small iPad with the advantage of Siri). If I have to update the baseband...no biggie....I can pass this iP4 to another user on my AT&T account....so no real need for resale or the unlock in the next year at least.... Thoughts, ideas, any guidance from those more experienced in all this on which version to go to (or just stay on 4.2.1)? Thanks in advance!