no wifi on iphone 3g

I update my 3g to 4.1 it is unlock before but not now my bb is 05.14.02 and i lose my wifi I jailbreak it i have cydia on it but not wifi any help thanks :(

u need to install the Deb files manualy but i dont know what files to use i am stuck in the same location...

thanks for your help if you now how to do it let me know :)

If you are after unlock, then you either need to load fuzzyband (via offline DEB) or you need to use new redsn0w/pwnagetool to upgrade baseband to 06.15 and then load the latest ultrasn0w unlock offline via DEB from that

Dev-Team Blog - Ultra-recycle

let Cyidia Work for the first time..
it doesnt matter WIFI or not
it will return to Springboard
Download iPhoneBrowser
(connect phone to computer after iPhoneBrowser is working)
mobilesubstrate_0.9.3366-1_iphoneos-arm.deb (must be this version)
ultrasn0w_1.2_iphones-arm.deb

copy both files to
/var/root/Media/Cydia/AutoInstall/
with iPhoneBrowser
after u copy them
Reboot ur phone Twice

hope it helps..
first of all u need to do what Olethros wrote else it wont work..