So I was playing with Xposed modules on my Note 3 recently and somewhere along the line messed up my data connection, i.e. it won't work. I figured by installing a custom Rom I'd fix the problem. It didn't work as planned. I believe I corrupted the EFS on my device, as my baseband version says "unknown." I've reflashed the stock rom to my phone, but it didn't help.
My question is: What options do I have to fix my EFS files to regain connection to the network?