VidiU Go Recovery Mode

Download the latest firmware image from https://teradek.com/pages/downloads#vidiu-go
Rename the downloaded file to vidiu-go-firmware.bin (guide for MacOS and for Windows), and place it in the root directory (you can also think of it in general as the start or beginning of a particular folder structure - the first location that opens when browsing a drive) of a microSD card or USB drive.
NOTE: The microSD card or USB drive should be formatted with an MBR/fdisk partition table and a single partition formatted as either FAT32 or exFAT.
The following tool from the SDCard Association makes this very easy and is available for both Windows and MacOS - https://www.sdcard.org/downloads/formatter_4/index.html
Turn off the VidiU Go by holding down the power button until screen turns off.
Insert microSD card or USB drive
While using a paper clip to hold down the factory reset button (next to the microSD slot), turn the VidiU Go on using the power button.
Once “Recovery Mode” shows on the front panel, the factory reset button can be released. The recovery mode will first scan for a microSD card and then for USB drives, and look for vidiu-go-firmware.bin in the root of each card or drive. The front panel will show whether a drive and recovery file is found, and which one is being installed.