I see, maybe it depends on the jailbreak tool used? I did it on a 3gs and my hung up. Had to put into DFU mode and restore it.
Gotcha didn't know that. I'm not as seasoned as many on here regarding jailbreaks since my 4 is not jailbroken. My last one I had that was jailbroken was my 3gs.I think the app your talking about is called PanicRoom but it doesnt work on 4S
I wouldnt go anywhere near removing any file system files. A wrong delete on that and your device will be stuck. Big nono.Get ifile to delete big chunks in your file system that may be sneaking around. Download springtomize 2 and use their handy tool that allows you to delete Cydia preferences. There's no restoring or wiping for you sadly without totally losing the jailbreak. So everything is painfully slow and cautious!