1.1.1 iPhone Jailbroken and No Service?!

[voucher1977]

Hey guys, I had had iPhone firmware version 1.1.3 and downgraded to 1.1.1
I followed all the steps (*#307#, 0, accept, hold, etc.) and jailbroke the phone. AppSnapp is on my phone, however I have No Service, at first it had no bars, now it says "No Service" I am an AT&T costumer, with an AT&T SIM card which worked before the downgrade/jailbreak. Does anyone know how to regain service without upgrading back to 1.1.3? Any suggestions would be greatly appreciated!

 

[hobo]

You have an AT&T SIM card. Is it an activated AT&T SIM on the specific iPhone plan?

 

[voucher1977]

Yes, it is an AT&T SIM card, it works perfectly on 1.1.3

 

[voucher1977]

any help? =]

 

[geoffreak]

Once you have upgraded your phone to 1.1.3's baseband or if you have an OOB 1.1.3, you CANNOT get any service whatsoever on any downgraded versions.
These versions require a lower baseband to operate and hence you cannot get reception with the 1.1.3 baseband.

You need to restore 1.1.3 or complete the jailbreak process back to 1.1.3 if you plan on having an iPhone, versus an iTouch with a camera.

 

[voucher1977]

Thank you very much! =]

 

[pelabd]

I have gotten my 1.1.2 iphone unlocked with 1.1.3 on it but I put in my tmobile sim, but i get no service PLEASE HELP