iPhone 3g : No Signal after iOS 4.2.1

[joshuamagora]

Hey Guys , PLEASE help me . Yesterday i upgrade my iPhone 3g to iOS 4.2.1 and after that i downloaded ultraSn0w but still i don't have network connection . PLEASE HELP ASAP


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[blueroom]

Does it work before you jailbreak it?

 

[joshuamagora]

Does it work before you jailbreak it?

What do you mean ?

 

[blueroom]

Do a DFU restore with whatever the current 3G firmware is from Apple. Don't run ultraslow or any jailbreaking software. Nothing, not even the backup at that point.

Does it work at that point?

 

[joshuamagora]

Do a DFU restore with whatever the current 3G firmware is from Apple. Don't run ultraslow or any jailbreaking software. Nothing, not even the backup at that point.

Does it work at that point?

i dont get what you said . Sorry

I try that install iPad baseband in redSnow but it didnt work Will i have this same problem if i downgrade my iPhone ?

 

[bryan.kel123]

do a FULL restore through itunes. it will delete everything from your phone, but it should solve your problem. i had to do the same thing after jailbreaking. now my iphone is not jailbroken, and signal is always working.