APN disappear; Status 7 tying to flash 10.2
I've got a Samsung Galaxy Relay 4G using PhilZ Touch 6 recovery and cm-11-20140518-NIGHTLY-apexqtmo. I have an AT&T sim card and when I try to input APN settings for AT&T nothing saves. I've tried everything including 5 ROM's, all running KitKat emulations. I read that Android 4.0+ will not allow you to change APN settings, but is there some workaround. I've also discovered it disables APN apps from accessing APN settings.
I've also tried to flash 10.2 but I get Status 7 errors every time I try. I've followed instructions on removing access commands from the updater-script file and re-zipping, but it also aborts.
I've called *#*#4636#*#* and it doesn't look like the phone sees the SIM card, but maybe that's due to the APN settings? It won't even call let alone send/receive data. I've tried 2 different AT&T SIM cards with the same result.
Any help would be greatly appreciated!