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 Garmin nüvi forums
 [GUIDE] Sorting through the GPS Chipsets on Garmin
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gpspassion

93402 Posts

Posted - 01 nov. 2008 :  01:43:33  Show Profile  Visit gpspassion's Homepage  Reply with Quote
But surely they have a way of knowing, there aren't that many combinations? And would need to know to push the proper update?

@louchem - that about screen is odd indeed, but how do you know you got the GPS FW version (2.80 ?) on the diagnostic page, since it's 2.80 it could well the the System software version? I fired up my eTrex Vista HCx and sure enough it shows "Bravo Version 2" with Software version being v2.80 too.

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SergZak

USA
1761 Posts

Posted - 01 nov. 2008 :  01:58:56  Show Profile  Reply with Quote
My thought was that maybe they are polling the GPS chipset internally for it's ID and using that as the ID used for display. Since they are now using multiple manufacturers (and likely will be switching again in the future), maybe the location of the chipset ID varies too much between the manufacturers so they can't rely on a positive ID 100% of the time. Like I said, just thinking aloud...

You do have a point though about having to properly ID the chipset to push the proper update...

nüvi 3490LMT, nüvi 3790LMT, nüvi 765T, nüvi 855, nüvi 760, nüvi 750

Edited by - SergZak on 01 nov. 2008 02:02:44
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louchem

USA
5 Posts

Posted - 01 nov. 2008 :  02:35:00  Show Profile  Reply with Quote
quote:
Originally posted by SergZak
Did the bravo version and the displayed GPS chipset version coincide? The reason I ask is because my "Bravo" version is listed as version 2 yet my GPS software version is listed as 2.80 and was detected/updated as v2.80m (MTK). Like I said in my last post, I have a feeling this "Bravo" version has nothing to do with the GPS chipset...but then again, I could be very wrong as well.


Well, I'm just going by what I've read on the internet...so I guess take it with a grain of salt. At first I was assuming I had the Mediatek chipset and figured it was just already pre-loaded with the v2.8 upgrade. But, the 2.8 upgrade was released in mid-October around the same time I ordered my unit, so the more I think about it maybe that is not correct. I'm not certain whether the 2.8 on the diagnostics page refers to the GPS SW version or the system software version. Of course right now (assuming a Mediatek chip) they would have the same 2.8 version designation.
quote:
Originally posted by gpspassion
@louchem - that about screen is odd indeed, but how do you know you got the GPS FW version (2.80 ?) on the diagnostic page, since it's 2.80 it could well the the System software version? I fired up my eTrex Vista HCx and sure enough it shows "Bravo Version 2" with Software version being v2.80 too.


I am flying a bit blind because I have not been able to connect to the Garmin server for a firmware update. I always get an error after it does the software check (and tells me I have the latest version) and after I click <Next> to try and download "additional" updates. So, I have no way of telling which chipset type I have.
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Stefan C

22 Posts

Posted - 06 nov. 2008 :  01:15:07  Show Profile  Reply with Quote
I've actually heard about a year ago from another GPS review site that the Garmin nuvi 7x0's have a less sensitive/reliable antenna than the nuvi 6x0's since the 6x0's use a pop-up antenna but the 7x0's have a built in one. Well...I have a nuvi 760 and the reception is extremely good. Sometimes I even get 14-15 foot accuracy but usually 20-30 foot accuracy which is still really good. My 760 has the SiRFInstantFix2 antenna built in.

Have: Garmin nuvi 760
Had: Magellan Meridian Gold
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gpspassion

93402 Posts

Posted - 06 nov. 2008 :  01:20:06  Show Profile  Visit gpspassion's Homepage  Reply with Quote
Another site ? Try this topic GPS acquisition nüvi 7xx / SIFv2 AGPS impact ? in the forums. But anyway this is not GPS Chipset related but has more to do with the design. As a sidenote SiRFInstanFixII is not an "antenna" it's just an AGPS capable firmware for the SiRFstarIII chipset ;-)

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louchem

USA
5 Posts

Posted - 12 nov. 2008 :  06:02:29  Show Profile  Reply with Quote
quote:
quote:
Originally posted by gpspassion
@louchem - that about screen is odd indeed, but how do you know you got the GPS FW version (2.80 ?) on the diagnostic page, since it's 2.80 it could well the the System software version? I fired up my eTrex Vista HCx and sure enough it shows "Bravo Version 2" with Software version being v2.80 too.


I am flying a bit blind because I have not been able to connect to the Garmin server for a firmware update. I always get an error after it does the software check (and tells me I have the latest version) and after I click <Next> to try and download "additional" updates. So, I have no way of telling which chipset type I have.


Just wanted to update this a bit. I was able to download the recent v2.9 system software update to my Venture HC last night. Again the download for any chipset updates failed as before. When checking diagnostics I now have listed software version 2.9 and Bravo version 3. So, my assumption before that the software version on the diagnostics screen was the chipset version was wrong, it is actually the system software version. I still do not have any listing for GPS SW version in my software version page on the unit, so I still have no idea what chipset and version of the GPS SW I am running.

Garmin e-mail support was decent trying to help me in figuring out why I cannot connect to the server for chipset updates...up until I reached a software engineer. He was not very helpful and has now stopped answering my questions. I guess they just want me to go away.

One other interesting tidbit. A user on the Groundspeak forums has actually intercepted the communications between his version of WebUpdater and the Garmin site when trying to update his Bravo3 Venture HC. He has the exact same problem I do where it is not connecting for chipset updates. Here is the info he gathered in case someone finds it useful

quote:
I decided to grab the traffic between the updater and Garmin's website, and this is what I see (binary information removed). Perhaps they can use that as a starting point in figuring out what is wrong with their own web services. I'd be glad to provide the whole capture, but if they don't know how to capture it themselves, then they really should pay me for it :)

POST /support/WUSoftwareUpdate.jsp HTTP/1.1
Accept: text/*
User-Agent: WebUpdater 2.4.1
Content-Type: application/x-www-form-urlencoded
Host: www.garmin.com
Content-Length: 1340
Cache-Control: no-cache
Cookie: ......

req=%3c%3fxml%20....


And the response:

HTTP/1.1 200 OK
Server: Apache
Content-Length: 22
Content-Type: text/html;charset=ISO-8859-1
Date: Tue, 11 Nov 2008 16:03:24 GMT
Connection: keep-alive
Set-Cookie: LB=jahia2; path=/

500: Exception caught


The XML request in the request body, after replacing all the escape code:

req=<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Requests xmlns="http://www.garmin.com/xmlschemas/UnitSoftwareUpdate/v3">
  <Request>
	<PartNumber>006-B0695-01</PartNumber>
	<TransferType>USB</TransferType>
	<Region>
	  <RegionId>14</RegionId>
	  <Version>
		<VersionMajor>2</VersionMajor>
		<VersionMinor>90</VersionMinor>
		<BuildType>Release</BuildType>
	  </Version>
	</Region>
  </Request>

  <Request>
	<PartNumber>006-D0XXX-00</PartNumber>
	<TransferType>USB</TransferType>
	<Region>
	  <RegionId>16</RegionId>
	  <Version>
		<VersionMajor>2</VersionMajor>
		<VersionMinor>0</VersionMinor>
		<BuildType>Release</BuildType>
	  </Version>
	</Region>
  </Request>
</Requests>


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gpspassion

93402 Posts

Posted - 12 nov. 2008 :  12:45:48  Show Profile  Visit gpspassion's Homepage  Reply with Quote
Thanks for the update, hard to understand what's going on! I'll see if I can get some info on that potential new chipset/platform. Since the eTrex H series use the MTK v1 chipset maybe they've switched to the MTK v2 chipset already used on the Qstarz Nano BT dataloggers. Could you tell us how you find the performance of your eTrex in the eTrex H Topic?

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gpspassion

93402 Posts

Posted - 24 nov. 2008 :  10:59:16  Show Profile  Visit gpspassion's Homepage  Reply with Quote
Article on the portal updated with the type G/M/M2 and also added a link to louchem's write-up on the "mystery chipset".

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gpspassion

93402 Posts

Posted - 14 janv. 2009 :  19:27:55  Show Profile  Visit gpspassion's Homepage  Reply with Quote
Article on the portal updated with the v3.10b info, posted by SergZak here : http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=122026

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graywo

2 Posts

Posted - 17 janv. 2009 :  19:32:35  Show Profile  Reply with Quote
I have Nuvi 250, SIRF GSC3f module PN B0478-00 SW v3.00
Boot BLK, X-Loader, System PN B06600-00 SW v3.80

Nuvi250
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gpspassion

93402 Posts

Posted - 18 janv. 2009 :  00:57:11  Show Profile  Visit gpspassion's Homepage  Reply with Quote
Welcome to the forums, you got one of the early 2x0's then.

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graywo

2 Posts

Posted - 18 janv. 2009 :  10:24:52  Show Profile  Reply with Quote
Thank you
yes, I got it on April 08, CN Europe 08 NT preinstalled

Nuvi250
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gdi

USA
2 Posts

Posted - 17 févr. 2009 :  13:30:44  Show Profile  Reply with Quote
8mo old 260w. How can I display/screenshot my unit's chipset soft/firmware version? I've prowled this site, but can't figure out how to find this diagnostic info. Thank you. Bill H

Nuvi 260W and various iQue 3600s
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gpspassion

93402 Posts

Posted - 17 févr. 2009 :  19:02:44  Show Profile  Visit gpspassion's Homepage  Reply with Quote
Tools/Settings/about

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gdi

USA
2 Posts

Posted - 19 févr. 2009 :  15:38:54  Show Profile  Reply with Quote
Thank you. Bill H

Nuvi 260W and various iQue 3600s
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