messed up using titanium backup

[blueland78]

I rooted my evo with unrevoked 3.
i backed up htc facebook from titanium backup and deleted the file.
once I powered off and tried to power on, i kept getting stuck at 4g sign after sprint network.
i tried to reset to factory setting sd card and eveything and still wont work.
I dont know what to do...please help!

 

[npark]

Did you do a nandroid backup? (If you're going to delete files in /system you need to have a backup of the rom) If you didn't, well, this is a good lesson...

Here are your options:
(1) Use adb in fastboot and restore the file you deleted
(Because you should have backed up the file you deleted... if you didn't... well, that's lesson #2

(2) Use this: [ROM] 01/26/11 | SPRINT LOVERS | 2.2 | 3.70.651.1 | Radio/Wimax/PRI All-In-One - xda-developers
This will get you a rooted factory image. Follow the instructions. If you're going to flash via recovery, then be sure to wipe data/cache/dalvik.