Mobile Network Disconnected

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http://androidforums.com – Hello, I am having an issue with my Galaxy s4 L720 Sprint phone. I updated to Omega custom rom and lost my ability to use wifi or mobile network. I would greatly appreciate any assistance in restoring this. I attempted to recover to my backup but there was an MD5 mismatch and the backup is somehow deleted. Should I reinstall a stock rom? Would that recover my network? (General)