I have a brand new Tetra, but when I tried to set it up, I wasn't able to get past the very first screen where it asks me to disable the radio by clicking the reset button quickly. No matter what I click, nothing happens. I've tried 1 second, 7 seconds, 30 seconds, all have no effect.
I decided to try updating firmware from the Serial CLI using "sysupgrade", which worked well. I'm not at the latest firmware. However, now the serial port is asking for a username and password, whic