Default No WiFi, No data and keeps rebooting

Guys, just as the title says. I had problems with my phone this morning and used the flash tool to put 11a on. Trying to update the 12b right now but the phone has no data, no wifi and reboots every minute or so.

Any ideas what could be wrong and how to fix?
LG G2 VS980
- XDABBEB'S 2.0 25A ROM
- TWRP 2.7.1.0