Thread: Garmin City Navigator Europe NTU 2015.20

zumo 3x0 had an update to V3.80 about a month ago. Maybe the new protection has been included

Protected firmware devices give "cannot authenticate map" error when you load a map without its .gma and .unl
Do you get this error?
I think there is another reason.
If you have old CNE map in zumo, backup it along .gma and .unl and try to remove it.

Originally Posted by Neil

Earlier V20.11 EU DEM has header 23.04.2010 15:50:47 and Part Number D224900AG013. It's overall size at ~461MiB is larger [but only less compressed] than current V20.12 of ~303 MiB with header 10.01.2012 16:19:20 and Part Number D224900AG013. Since both V20.11 and V20.12 have the same ID 288 maps with the same actual mapping data, to be ultra-precise, Giomen is also totally correct in that the EU DEM is 'the same in detail since 2010'.

Lol! It really does depending on how you look at it, and what's the meaning of 'detail' because the 2 EU DEMs can be considered to be the same, or not.

It is last edition of Europre DEM!!!

Code:

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After this date I could see only file header and name changes. The map content is THE SAME.

Lol! Maps name and consequently path to download source is different for NT and NTU version. But the map is the same.

I was actually agreeing with you and defending your honour Miss G [for Grumpy]. I mentioned 'earlier V20.11 EU DEM' because there were actually 2 in 2010, both with version 20.11 but with slight variance in the Part No. [D224900AG013 and D224900BG013]. The earliest was the larger sized V20.11 with header date 23.04.2010, the next was the more-compressed V20.11 you've mentioned above with header date 16.09.2010 and the latest is V20.12 header date 10.01.2012. Both the later V20.11 [your mention above] and latest V20.12 [aka D2249750A.IMG with Part No. D224975AG013] have same size of 317,841,408 bytes, same 288 maps [as does the earliest V20.11], and therefore the map content is the same in all 3 DEM maps. Stands to reason if the earliest and latest have the same mapping data then so does the intermediate one. Doesn't matter whether NT or NTU detail map is used with any of the 3 maps regardless of the original source of the DEM, i.e. supplied with a non-unicode or unicode version unit as you said. The header date of the first V20.11 of 23.04.2010 aligns with the April 2010 release of 3790 which originally had NT EU mapping factory loaded.

From what I can see, the 2nd V20.11 and V20.12 are identical apart from the header info date & P/No. Although the first V20.11 has the same data as the other two it's just less compressed. In short, it doesn't much matter which one is used. The larger map may draw a little quicker if space isn't a problem.

I now see that you have Europe Central map on board. You've perhaps not understood what catymag is suggesting. As other possibilities have been eliminated and the card works in another unit, it may be that the gma & unl codes for Eu C map in the internal memory of your zumo are interfering with the proper operation of the unlocked all EU map on the card.

Like any other card-capable Garmin unit universally, your zumo can read a detail map on the card in Garmin root folder named gmapsupp.img. You have the naming and path correct as you see it in map info to select it, so then please try what she's sensibly suggested, back up the EC .img and any .gma/.unl files and remove them entirely from the unit as de-selecting the CE map may not be sufficient.

LOL! Nuttin' is worse than JB'ing an i[suck]Phone!

Backup and remove the CE JCV file and dl the appropriate one for all EU after you've confirmed that the map now works. Then load the new JCV onto the SD in Garmin/JCV folder.