Ok, so I have recently taken an interest in iPhone modding, and I'm pretty decent... I currently run firmware 2.2.1 and I use Cydia (not Installer, it never seems to work for me...

) I have Winterboard installed and OpenSSH, those are about the only two that I use most, I mod small stuff right now, like themes and whatnot.
Ok, so I was SSHing my phone with WinSCP and I'm pretty good with the SSH I know what to mess with and what to leave alone. Ok I downloaded some themes as templates and I used the 3g icon change theme to change it to a fireball, and I wanted to mod it for my theme... I did, and at first the springboard crashed but I restarted it and it was fine.
Then... I did a couple more mods to my phone and they worked fine, no more crashes... until I noticed I could change the Wifi bars as well... so I followed all necessary procedures to do so, correct image size, correct file format (.PNG), Correct File names, and everything... I restarted my springboard and it crashed, I half-expected it though, so it wasn't a total shocker. and when I went to restart it, hoping it would work like the 3g one did... it didn't, and now, after countless reboots, and restarts the phone will still only run in safe mode... I even tried removing the files I added to mod the logo/bars... but to no avail... I am lost and confused... any one know what went wrong? please help... I'll try a restore and rejailbreak. please help, Thanks (in advance)