There are replacement buttons. You remove the old rubber and stick the new one on. Simple.

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There may be a problem reading the SD card. If there are cards in both Zumos, swap them and see the result.

The Zumo XT3 can still be a communications hub, although it has the option to leave that to your phone with Tread installed. In this case, you connect your helmet headset to your phone, and set the XT3 to send routing information to your phone.

I use the XT3 as a hub myself, I haven't tried the ...

I came to an interesting conclusion. I used the good old (simple) MapSource to plan the route. I saved the route in GPX format in a folder on the disk. Later, I transferred the gpx file to the SD card in the XT3 with a cable. After importing the file into the internal memory, the calculation was ...

The same. I always use the same versions of maps.

Everything updated to the latest versions.

The intersection has no connection for moving points. Another design point has been placed on this AC, which has branches quite far away. The point is moved parallel to the opposite lane of the AC.
BC: XT:

Planned route created in BC and saved in GPX on local disk.
Premmik BC.JPG

Using TripManager GPX transferred to SD in XT3. After import and calculation in XT3, shape points on AC are moved to the oncoming lane...
2026-04-24_145853_23313.png
I haven't noticed these shifts on local roads.
2026 ...

New SW patches have been released

I also didn't sync to Tread, connected to a Samsung Galaxy S24+ phone.
Zumo was running on battery power in the car. Calculating the route from point A to B was very easy.
I don't see a reason for a reset during operation.
For once, I haven't contacted support yet, not enough operating hours have ...