I am happy to report that laziness wins
The shortcut worked just fine and as mentioned by drgeoff the passwords WILL have to be re-entered (SPs, AA, user).
Needless to say, the device sold as "never used" was already registered...and some wonder why people hate eBay.
T'was a good time to remember that default u/p is admin/admin and that a factory default can be done dialing ***81 or pushing the back reset button for 10sec.