I have an odd issue and I'm hoping maybe I can get a bit of help with it. I bought my Eris from a friend as a backup phone / toy. I've always gotten a decent signal with it but have usually used the WiFi only script, after each ROM I've installed, to help with battery life. I decided to install this ROM and, right from the very first boot, I have been unable to pick up a signal (even in areas where my Rezound gets a perfect signal). I have tried everything to fix this. I've messed with the radio settings using *#*#4636#*#*. I've also flashed way back to an early radio, hboot, and the Cupcake RUU, then upgraded one by one through the various RUUs and OTAs until I ended up on the final version. Nothing is working. I don't even get the option to activate the phone on any of the stock ROMs. No matter what I do, I don't get service. I ran CyanogenMod 7.1 in the past, along with a handful of other ROMs, and never had a problem. It wasn't until this one that this started happening. Does anyone have any idea what could be causing this, and maybe know how to fix it? Thanks in advance.
Edit: I tried flashing back to 1.5 once again, and I went into Mobile Network Settings and was able to get a signal by changing the "Network Service" setting from "Home only" to "Automatic A". I never had to do this before. Any ideas on how I might be able to change that?
Stock (passed down to the fiancée)
Nexus 7 (2013)