Null imei/ unknown baseband. galaxy s4 i337.

[Richard Hayward]

I rooted my phone a few months ago. Not long after my imei number disappeared along with the baseband version. In the notification bar where my signal used to be is now replaced by a circle with a line through it. Can anybody walk my through how to fix it I've tried everything I can think of.

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[Icone]

Try to flash Stock ROM through Odin, make sure to have the drivers installed.