To add to this for anyone in the future:
- When you reset it (long hold, lots of flashing) there will be a wifi network that's the MAC address (on the back, middle row next to the QR code).
- Make sure you turn off auto-adopt in your console, ugh.
- the wifi password is the last 6 of the MAC (in caps) and the 6 character code at the bottom of the text on the back of the device.
- you can do it from a Mac by forcing it to accept older protocols:
ssh -oHostKeyAlgorithms=+ssh-rsa -oPubkeyAcceptedKeyTypes=+ssh-rsa [email protected] - I got the firmware from here - https://community.ui.com/questions/U6-Extender-wont-update-from-6-0-15/295850ba-47b9-446e-9667-20663e4236b6