GPS Week Number Rollover [WNRO] JUST Findings, Fixes, and Frustrations

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Check too see if it still gets a satellite fix after a restart and also after 7 days as some sirf 3 chipset models (including my 720) are struggling getting a sat fix without regular quickgpsfix updates from TT Home.

I can confirm that my Go 910 (SE NC 9.510) with Sirf 3 chipset works well once the quickgpsfix update via HOME is performed. After 7 days (without updating the quickfix file), the unit has some troubles to navigate because of lack of satellites (no problem with time). However, after switching the GO910 off and on, the GPS unit picks up 8-9 GPS satellites and works again properly.

All devices with SiRFstar chipset are not affected by the problem.

Yes all TOMTOM go 720/730/920/930/7000 with sirfstar
Are affected if the navcore is 9.702 only ok with navcore 9.541or quickfix GPSWith truck navcore they affected only solution all 7 days quickgpsfix (ephem)

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Same here, my GO730 and 920 with sirf 3 chipset and 9.702 truck navcore needs a regular quickgpsfix update.
shame their doesnt appear to be a file or folder we could swap from the official 9.541 navcore to fix it , im sure if their was some navcore expert would have worked it out by now.

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Try my solution (post #67)...

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Charlie
I try your solution but if no quickgpsfix no signal
With quickfix ok, but only for few days
If is the solution I don't understanding
I try in a lot of units and the same problem

What your 9.702 navcore
Regards

Thanks i know that, i' m trucker I need this navcore
But I try the solution of charlie62 and no result
Perhaps my navcore version is not the good one
Regards