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Dashcam not loading corrct date & time?

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Martin King 2	31/08/2022 13:55:54
1129 forum posts 1 photos	Hi All, My Roadhawk HD dash cam has not been setting the correct date and time for quite a while now. Just got around to trying to sort it out! Works OK and announces GPS lock whenever we go out, I have an external GPS antenna built in to the car. Is there some sort of battery in the camera that may have died? If so can I fix it? Cheers, Martin
Adrian R2	31/08/2022 14:09:16
196 forum posts 5 photos	If by quite a while you mean since April 2019 then perhaps the GPS week number rollover may be to blame?
Martin King 2	31/08/2022 15:27:23
1129 forum posts 1 photos	Hi Adrian, It could be that long. What is this week number thing please? Martin
Adrian R2	31/08/2022 15:32:42
196 forum posts 5 photos	Part of the GPS broadcast includes the week encoded in a 10 bit field (0-1023) which increments for around 20 years and then goes back to zero again. Older devices need a software patch from their makers to update so you will have to search and see if something exists for your device and how to apply it. GPS Week Number (Wikipedia) I have a TomTom that no longer predicts arrival time for this reason, unfortunately now unsupported by them so unfixable but still works otherwise. [grammar edits] Edited By Adrian R2 on 31/08/2022 15:39:07
Martin King 2	31/08/2022 16:03:11
1129 forum posts 1 photos	Hi Adrian, Many thanks, will contact Roadhawk and see what gives, much obliged sir! Martin
Adrian R2	31/08/2022 18:42:31
196 forum posts 5 photos	Bonne chance, there were specific fixes around the time but I would expect any more recent software update to do the trick. It should then be good until 2038. Adrian

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