GPS Week Number Rollover (WNRO) JUST Findings, Fixes, and Frustrations

**artful2** · 16th April 2019, 03:20 PM

I have a GO920 and my friend has a GO720, both running version 9.702 Truck software. I've substituted the 9.541 bin folder but the fix only works if I do a reset before switching the devices on. If I switch them off then on again without a reset it finds the satellites but won't lock on no matter how long I leave it. However it works fine with the 9.541 software so I presume that substituting the file(s) in the bin folder is only part of the solution on some devices. We use the these when we're caravanning so need to use the truck software. Is there likely to be an update for the 9.702 truck software to fix this. Has anyone any suggestions.

**quizmaniac** · 16th April 2019, 09:49 PM

HI ,you didnt need to replace the bin folder as that is to solve the time reset problem which the 720 and 920 dont suffer from,as you have found out what they do suffer from is the sat nav lock issue ,
Too solve this, update your units using TomTom home ,It will offer you a "quickgpsfix" update and your units will find and lock the sats very quickly after that. Unfortunately it looks like this will only last 7 days so needs doing once a week which is annoying unless someone can find a fix .If you only use them occasionally just update before you need them.

**pascoal** · 17th April 2019, 08:54 PM

I see now the ephem files now the date of creation is year 2120 in the beginning of week is 2019
Perhaps they solved the 7 days problem
Some one have feedback

**artful2** · 19th April 2019, 12:11 PM

Originally Posted by quizmaniac

HI ,you didnt need to replace the bin folder as that is to solve the time reset problem which the 720 and 920 dont suffer from,as you have found out what they do suffer from is the sat nav lock issue ,...

Thanks, it's working fine with the GPSFix update so, as you say, I'll just need to keep updating it before use.

**krok** · 25th April 2019, 03:50 PM

Products that in GPS signal problem:

Car Navigation
TomTom GO
TomTom GO 950 LIVE
TomTom GO 950
TomTom GO 750 LIVE
TomTom GO 750
TomTom GO 940 LIVE
TomTom GO 740 LIVE
TomTom GO 650 LIVE
TomTom GO 540 LIVE
TomTom GO 930
TomTom GO 730
TomTom GO 630
TomTom GO 530
TomTom GO 920 (T)
TomTom GO 720
TomTom GO 520
TomTom GO 910
TomTom GO 710
TomTom GO 510
TomTom GO 700
TomTom GO 500 (2005)
TomTom GO 300
TomTom GO
TomTom Start
TomTom Start ² / Start Classic
TomTom Start
TomTom ONE
TomTom ONE XL
TomTom ONE IQ Routes
TomTom ONE 30 Series
TomTom ONE 3rd Edition
TomTom ONE 2nd Edition
TomTom ONE 1st Edition
TomTom XL / XXL
TomTom XXL IQ Routes / XXL Classic
TomTom XL LIVE IQ Routes
TomTom XL IQ Routes ² / XL Classic
TomTom XL IQ Routes
TomTom XL 30 Series
Integrated navigation devices
Blue&Me - TomTom
Carminat TomTom
Carminat TomTom LIVE
Carminat TomTom Z.E. LIVE
TomTom Mazda Navigation (NVA-SD8110)(LIVE)
TomTom Mazda Navigation System NB1 LIVE

source:
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**Jong** · 28th April 2019, 10:10 AM

Dutch:

Code:

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English: Can you help me to let me work the Go 710 Navcore 9.510 ? Thanks in advance, greetings, Jan Have I to Update the Navcore too ?

**BIBUOT** · 28th April 2019, 12:20 PM

Hi

Must install Navcore 9.541... if existing for Go-710

**rusigor** · 28th April 2019, 07:54 PM

Originally Posted by krok

Products that in GPS signal problem:

Car Navigation
TomTom GO
...
TomTom GO 700
....
source:
[Only registered and activated users can see links. ]

I use navcore 9.510 in my GO 700 - no probs. Today (after about half a year delay) launched it - in 5-10 mins it fixed several satellites, fixed location. After that went to "Set clock", taped "Synchronize" and clock works well.