Zumo User Forums

For all of the Zumos that I have at home, there is a pre-boot menu which you access by pressing a sequence of power button.


One of the options is to roll back the software to a previous version. But this is for the 590, 595, XT and XT2. The Pin facility i don't recall using on any of those, so I cannot say whether reinstalling system software would solve the PIN problem.

Nor do I know whether Garmin Express will re-install the software.

The 660 was a very different beast from the later models. I took very few notes on how the 660 behaved. Someone on here may know. I'll see if I can locate anything.


Edit....

The link below describes how to enter pre boot menu for various devices including the Zumo 660. It may also have other information.
But as I said, even if you can get back to a previous software version, there is no guarantee that it will reset the PIN. I simply do not know the answer to that


http://www.poi-factory.com/node/48270

Thanks so much for your suggestion.

I tried the following, as per the website:
Models zumo: 660
1. Turn off the navigator.
2. Press the LOWER left corner of the screen .
3. Turn on the navigator still holding the lower left corner of the screen + power button.

All that did was recalibration, after chasing a button around the screen.

This is proving to be a curly one indeed.

I don't know if this will work but it costs nothing to try, back in the good old bad old days when crooks would steal car radios there was a trick of putting the radio in a freezer overnight that would clear the pin code. It might be worth a try.

Mate, fantastic!
Into the freezer it goes

Well gentlemen, the enigma has been solved!
The previous owner remembered changing the PIN code. It works with the updated code. Hooray.

Now it's time for a stiff drink

Glad you got it sorted. some people ie: the previous owner are not fit to be let out on their own

Hmmm. I'm glad I joined the forum nevertheless.
You guys have a wealth of knowledge.
I'll start using the Zumo properly now.

Rens wrote: ↑Tue May 20, 2025 11:24 am Well gentlemen, the enigma has been solved!
The previous owner remembered changing the PIN code. It works with the updated code. Hooray.

Now it's time for a stiff drink

Strange as you said it worked previously with that PIN?

I don't think he said the PIN had worked for him, unless I read it wrong.

You're right. I had indeed used it once. But that was several months ago.
I stupidly didn't record the PIN at the time, thinking that I would remember it. A bad mistake!
So I had to ask him again recently. And that's when he gave me the wrong code initially.
But we got there in the end.