Garmin echomap uhd 93sv Hard Reset

Hi,
Hope someone can help me with this. I bought a couple year old used echomap uhd 93sv and am trying to figure out how to do a hard reset. The manual has different reset options, but not one to take it back to the way it came out of the box.
Thanks, in advance for your help.

Master reset should do it
To perform a Master Reset on the echoMAP (CHIRP) 4x/5x/7x/9x* series:

Start with the device powered off
Press and hold the Home and Power buttons
Continue to hold both buttons until “Delete all user settings?” appears
Release the buttons
Select Yes

Thanks!

Tried holding the power and home to reset. That does not work on the UHD 93sv, all it does is keep turning the unit on and off. Looks like doing it the way the manual says works.