Q: my device is not registered as part of the iPhone developer program. how can i activate my iphone 5

Start by reading this:  http://www.tuaw.com/2013/06/13/psa-if-youre-not-a-developer-dont-install-develop er-betas-on/

Pay to join the developers program so you can register your phone or wait until it's actually released in the fall.

That's what you get for stealing software.

actually i never stole the software,i was told to upgrade to this beta 7 to fix my phones problem with signal,i did not know it had to be paid for,or that it would break my phone even more as i am no developer and know hardlys anything about phones never mind developing them ! if i knew for one second that it had to be paid for i would have not got it,but if that is the case,why dont i have to pay for all my other updates ive had on my phone?apart from that,does anyone know how i can get my phone back to 6.1.3 firmware.thankyou for any help offered.now i think i will go and give this phoneshop assistant a peice of my mind as his reccomendation has totally wrecked my phone :/

The phone shop assistant owes you a working phone.

If the phone shop installed it, they did so illegally. If they recommended that  you install it, I find it hard to believe that in the course of attempting to find a way to do so, you didn't run across the fact that it is only available to registered developers.

Go back to the "assistant" that gave you the ill-adivised "solution". You cannot get help here with beta software.

here you go man this should help. I had the same problem.

http://www.youtube.com/watch?v=qtjga0Dp_GE

after 3 months of Instaling the iOs& for Developers (which I paid) today my phone does not work and it says its not registered>.. I try to register it and it says eror eror eror, . Anyone knowes wher i can register my phone, How??

Tx

Thank you!