Flashing Opsis on Xenial

How to update the HDMI2USB-litex-firmware from the HDMI2USB prebuilt repository onto your Numato Opsis board.

Install hdmi2usb-mode-switch and its dependencies.

sudo apt --assume-yes install software-properties-common
sudo add-apt-repository --yes --update ppa:timvideos/fpga-support
sudo apt install hdmi2usb-mode-switch  
wget https://raw.githubusercontent.com/timvideos/HDMI2USB-mode-switch/master/bin/download-prebuilt-firmware.py

Get the stable version:

python3 download-prebuilt-firmware.py --platform opsis

Flash the stable version: (If you have more than one .bin you will need to specify the full filename.)

hdmi2usb-mode-switch -v --flash-image image-gateware+bios+firmware*.bin

This seems to always happen: You see 181818181818181 the first time you try to flash:

DNA = 110000001100000011000000110000001100000011000000110000001 (0x181818181818181)

It is a problem; the solution for now is...

sudo hdmi2usb-mode-switch -v --mode serial

then retry the --flash-image step above, it seems to always work the 2nd time.

Here are some other problems:

common-errors

notes about version versions