Originally Posted by rafaelrocha.ds
Sorry my english .. I'm from Brazil, not found tutorials about it here ... Do you know any other way to run the network? On 4.1.2 or 4.3 ... this hard life with my google traslate
My english is not very good, I'm from Argentina but gonna try to help you.
If you are using a 4.1.2 rom you have to backup your efs, install ariza patch and restore efs backup. Network is back.
If you are using a 4.3 rom you have to install patched kernel and patched modem (you can find both at first post of this thread).
If you only have gsm network, check your phone settings, maybe is set to use gsm networks only.
Hope this helps you. If not you must be a little more specific with the problem.