HX DataSynch Alert after FW update THEN GPS trouble

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Simon Lockwood

• October 03, 2026 13:00
• Edited

After updating tonight UK time to 1.658.2535 the unit installed and turned off as normal. When I turned back on I had a message about HX datasynch. I can’t remember what it said exactly but it was a problem message. Came out the menu and turned off. When I rebooted I didn’t see it again. Is this something to be concerned about?

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  Simon Lockwood

  • October 02, 2026 14:39
  • Edited

  Update: This could be a coincidence, but this morning i had the first ever GPS fail of my K3. First ride after FW update. Rode for about an hour and all was fine. Then looked down, whilst moving, to see zero speed (without an auto-pause). Distance stopped. Sensor readings (HR, PM, Di2) all connected and moved up/down as expected. Map froze to where the GPS went out. This is Central London, so i don't expect it to be a bad coverage zone (if such a thing even exist!).

  Turned it off / on and went for a test ride an hour later - and all was fine. Then another 5 min ride just said "acquiring GPS" for the time. Another off / reboot and another ride had GPS straight away. This is odd.

  Thoughts?

  Simon

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  Simon Lockwood

  • October 03, 2026 13:01

  Another ride, another GPS fail after 1h. Saved the ride and rebooted and it picked up the signal immediately, but what a faff.

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