iphone 4.o installed and no service

[ruach]

Hi.
I am in trouble.
Stupidly, I thought iphone os 4.o beta was beta version for everyone to try.
I received my new phone today and wanted to install the newest firmware, so installe iphone os 4.0.
The phone is locked.
What shall i do?
I am panicked and do not know what to do.
My phone is on vodafone and not jailbroken or anything illegal is done to it.
Will I be able to get help from you? and will applecare reinstall 3.l.3 to my phone?
Help me, please.😕

This is the message on itune.
"We are unable to complete your activation.
This device is not registered as part of iphone developer programme.
If you are a member of the programme, please register your device in the iphone developer programme portal."
I remember i registered the programme some time ago.
Please, help me.
Thanks for any help in advance.

 

[kevinthai]

Which model?

 

[ruach]

Which model?

Thanks for reply.
iphone 3gs 16g.
the firmware was 3.1.3.

 

[kevinthai]

According to my knowledge, it looks like you are out of luck. You can either pay $99 to become a developer or wait until 4.0 is released to the public.