Are you using the Boron LTE or the 3G Boron? Where are you located? I have been having one heck of a time trying to get any of my Borons to work with a 3rd party sim card. I am using the Boron LTE. Here is the thread of my problems and troubleshooting.Having an impossible time setting up LTE Borons with 3rd party sims I have only managed to get one of the Borons that I have connected, strangely I try the same firmware on the other Borons and I have not been able to get my other Borons to connect.