The O.MG Keylogger Cable is currently under development. To get access to the latest test firmware for Keylogger, please join the #omg-keylogger-early-access channel on the O.MG Slack workspace. Check the pinned messages for the latest build. If you aren't already in the Slack workspace, use this Slack Invite to join.
You also have the option of using the latest build for the original O.MG Cable here. Please note: older versions of the firmware are not compatible with the Keylogger Cable hardware. Only use the latest build!