I'm running 4.2.8 jailbroken. In the last few weeks the phone has been randomly respringing/rebooting. I tried removing apps and tweaks that were installed just prior to this behavior starting but things haven't seemed to improve. I was wondering if something has gotten corrupted and the phone needs restoring.

I've spent hours reading previous posts but it sounds like there's no way for me to avoid running into problems trying to restore 4.2.8 since Apple is no longer signing it. Cydia says I have SHSH for 4.2.8. The thing is, the sticky for TinyUmbrella says that those of us using 64 bit Windows 7 may have problems with TinyUmbrella, and I don't have access to another computer.

Should I try my luck or just wait for an untethered jailbreak of iOS 5? I'd really hate to lose my jailbreak.