i deleted websheet.app off of my iphone, please help.?

my iphone is jailbroken and is on ios 5.0.1

i was on ifile in var/stash/applications when i made a big mistake accidentally deleted websheet.app (i was trying to see if i can use ifile to delete apps and websheet was right above the file i tried to delete.i had to look into my sisters phone to see what i was missing)

it turns out that i need that to connect to wifi, and of course i cant now. i copied the file from my sisters phone and transfered it to the appropriate location. it still didnt work. i suspected its probably because shes on a different ios so with more browsing i figured out theres a recycle bin on ifile. (private/var/mobile/library/trash). i deleted my sisters and replaced it with my original websheet.app .. it STILL didnt work.

ive tried respringing, restarting, and even reseting my network settings, nothing has worked yet.

i know i made a dumb and careless mistake but i really want to connect to wifi again without restoring my whole phone and basically start from scratch. (ive tried backing up and restoring a jailbroken iphone with barely any success)