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

**pe1agp** · 13th April 2019, 06:38 AM

Dutch

Code:

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English
The solution for the TomTom Truck using the official or modified 9.702 navcore is very simple:
just replace a single file (the "glgps" in the "bin" folder).
It is necessary to replace the file \bin \glgps of 9.702 by that of 9.541.
Everything then works normally on GO x20, x30, x40 and x50.

I have successfully tested on the following models:
GO 920, GO 630, GO 730, GO 930, GO 540, GO 940, GO 750, GO 950 and GO 9000.
I do not have a One to test.

N. B. The same modification also works for navcores 9.510 and 9.401 (I tried).
It is interesting for the French, because the 9.401 is the last navcore before 9.510 which always indicates
the exact position of the radars in France after the law of January 5th, 2012 which forbids it.

All credits to Charlie62

**Jogger62** · 13th April 2019, 08:10 PM

Originally Posted by pe1agp

All credits to Charlie62

Thank you (Jogger62 and Charlie62 are one and the same person

)!

Just a little more clarification: I think only GPS equipped with Global Locate v2 chips can be corrected by the "glgps" file of the 9.451 navcore. Those equipped with version 1 will unfortunately probably not "resurrected" by this fix. This is the case of the following models: some One New Edition (some are equipped with the Sirf Star 3 chip), the One 3rd Edition, TomTom One XL, TomTom XL 2008.

**Jong** · 28th April 2019, 10:10 AM

Dutch:

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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 ?

**sjackie** · 17th June 2019, 12:58 PM

Originally Posted by pe1agp

...English
The solution for the TomTom Truck using the official or modified 9.702 navcore is very simple:
just replace a single file (the "glgps" in the "bin" folder).
It is necessary to replace the file \bin \glgps of 9.702 by that of 9.541.
Everything then works normally on GO x20, x30, x40 and x50.

I have successfully tested on the following models:
GO 920, GO 630, GO 730, GO 930, GO 540, GO 940, GO 750, GO 950 and GO 9000.
I do not have a One to test.

N. B. The same modification also works for navcores 9.510 and 9.401 (I tried).
It is interesting for the French, because the 9.401 is the last navcore before 9.510 which always indicates
the exact position of the radars in France after the law of January 5th, 2012 which forbids it....

Dear pe1agp,

I refer to the above post earlier in the treat and I ( my father

) do have a TomTom GO 630 and I undernstand it correctly that I only have to change the bin folder with the file I have to download from:

[Only registered and activated users can see links. ] or [Only registered and activated users can see links. ]

Is this un-depended from the Navcore which is installed?

**krok** · 14th April 2019, 12:08 AM

Work perfectly for me.
Thank you very much for all.
GO720.
9.702-navcore.

**MisterB247** · 16th April 2019, 12:56 PM

Hi Guys
was pointed here from another page. I have 2 tomtom rider 2's runiing the following
9.500.1161701.2 os 1114405
gps v1.2 boot 5.5250
europe-84 v920.5241
I have downloaded the file in question but it appears to be the same as the one in my unit. Tried copying anyway and made no difference.
I stuck an old rider 2 card into my unit and logged in through tomtom home and it has updated a number of files and hey presto it appears to have fixed the clock issue. Problem is there is no glgps file in the bin folder so dont know which file has done the trick. Anyone shed any light please got a trip planned soon but at mo keep loosing signal due to week rollover

**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.