Samsung galaxy s4 i9515 problem not registered to the network

[criz750]

hello i have a problem with s4 i9515 not registered on the network.
Tomorrow should get the new riffs and I do not know 'to use it.
I would like to fix the problem is not registered on the network someone can 'tell me if it' possible to solve this problem.
thank you!!

[criz750]

I finally 'got the riff and' went well thanks to the instructions of the friendly Legija !! .. now I am ready to work even I
I can not wait to start .. anyone can 'give me the pinout to connect the riff to s4 i9515 or maybe tell me what to do first?
am new to this scene a saint willing to give me a little help

[criz750]

why nobody helps me

[Ripgsm]

Becouse Here aren't in RIFF section but Samsung Section.