I ordered a new (cheap) AC router and a new LG Volt. When the LG Volt arrived, I was pleasantly surprised to see the 5GHz band working. I tested several things, such as beam-forming, channel widths, etc. then set the router to the side for about a month. Now that I have setup the router again, it seems I can no longer access the 5GHz range. The phone no longer even reads the SSID for the 5GHz broadcast. The only thing I can think of is the phone originally shipped with ZV4 and I have since upgraded to ZV5 and ZV6. Unfortunately, I only have backups for ZV5 and ZV6, so I have no way to revert back to ZV4. Does anyone have a backup for the original stock ZV4 firmware (Sprint prepaid)? Would I need to revert to the ZV4 radio (assuming the radio firmware also handles wifi)?