I think that I can help you out but before following the solution I will suggest you to make sure that you have reinstalled all your Metro bloatware and after that just follow the below method:
First Get the SPC by entering the IMEI into to an ESN Checker and get the 6 digit no.
After that just Open the dialer and then enter ##data#.
After this the eighth item will be labeled as FOTA so just open it and then enter the 6 digit no when it asked for it.
After entering the no just click on the first item which is labeled as DM Account and then Click and hold the metropcs.
Then Click on the Start DM and then you will see the data indicators light up.
After you see that just leave the phone until your account is ready and you will also get a confirmation when your account is ready and after that the phone will automatically reboot.
After this you will get a popup showing the new version number on your home screen if everything works fine.