[Solved] No USB connection after update

[dane]

I have just received my first dash (1.2 rev E). I was following the getting started guide and uploaded the hologram_dash_cloud example and I was prompted to do a firmware update which I also did.
I went to install the dash_repl_basic example and I couldn’t find the USB port.
I have checked on a few Macs and the USB is not listed ls -al /dev/cu*

I am using a powered hub. I found a similar closed post without a solution

Dash does not appear in USB / port in Macbook or Linux

I have a Dash 1.2 Rev D, a Rev E, and an earlier model with a red jumper. The Rev E has been working fine on my mac for a few weeks. Suddenly, it will no longer appear in the port list when I plug it in the USB port. ls -al /dev/cu* Does not show the device. Previously, it did. I tried my Rev D. No luck. I tried the old one with the red jumper - it works fine. I can’t use this old one for what I need to do. I need the Rev E working, but the point is: something happened in there. I think the…

What am I missing?

[dane]

Turns out the Dash rev E is programmed via HID so no serial port selection is required in the Arduino IDE to load a program.
Unless the sketch you load initializes a serial port there will not be one available in the ports menu.

The documentation is incorrect https://hologram.io/docs/guide/dash/programming-and-firmware/#arduino-ide