Echomap: map format not supported?

**Carto** · 9th April 2015, 06:37 PM

Hello,

I got the same problem and I tried all 3 download link to version 3.40.
All link are broken.
Is it possible to still have this version somewhere ?

Thank you

**nicolas81** · 21st April 2015, 12:34 AM

a link to discharge v3.40, I cannot make it

**catymag** · 21st April 2015, 01:01 AM

Originally Posted by nicolas81

a link to discharge v3.40, I cannot make it

in post n10 there are 2 good links, retry please

**fbomb** · 19th February 2015, 12:44 AM

I did receive an answer back from Garmin.

"Thank you for contacting Garmin International.

Unfortunately; there were some negative issues recently caused by third party mapping. To my knowledge, it was not the TrakMaps causing the issues but our engineers have blocked most third party map products from our marine devices. I apologize for any inconvenience this may cause. "

So I guess this is something to consider now when purchasing a Garmin product, they can just stop supporting third party maps when they feel like it. Beware if your buying a third party map.

unless someone finds a way to trick the unit somehow

**catymag** · 19th February 2015, 01:02 AM

If you read the linked thread, you can see after downgrading to sw 3.40 and upgrading then directly to 4.20 third party maps like Open Sea OSM maps work again, suggestion comes from Garmin UK.

**fbomb** · 19th February 2015, 01:06 AM

ok but i just tried to downgrade and it wont let me stuck on 4.20, ill let you know if i succeed.

**catymag** · 19th February 2015, 01:20 AM

Extract the gupdate.gcd from ChartplottersUpdatewithSDcard_20140306.exe (unrar it twice) and follow instructions.

**Neil** · 19th February 2015, 01:35 AM

Translation to EN for downgrade:

Spoiler: Click

If you don't follow the guide precisely the plotter will generate a GarminDevice.xml file on the card and it'll remain at the higher fw. After the downgrade, upgrade again directly to latest firmware. As catymag said, you must extract twice. First extract 'ChartplottersUpdatewithSDcard_20140306.exe', then extract 'program_card.exe' and look inside folder 'Root' to find folder 'Garmin'. Copy the relevant file 'gupdate.cgd' into a Garmin folder you've created in the root of the card [x:\Garmin\gupdate.gcd].

**fbomb** · 19th February 2015, 03:13 AM

Ah there we go since my unit is the touch screen you just need to hold the power button while booting. Now here's what I noticed if I downgrade to 3.4 and put the map card in it will work no problems... now I update to 4.2 and the same card still works but if i take another card same format same same maps it will say map format not supported pretty strange... if I downgrade again and pop both in while at 3.4 and update to 4.2 both cards will work.

Thanks for the help guys. I just hope the next updates wont ruin this some more... Not a cool move from Garmin to remove support of maps that have always worked on their units.

**catymag** · 19th February 2015, 12:23 PM

I think it's a bug only, not intentional from Garmin to remove support to third party mapping and no problems with them on echomap.
English developer got the solution, but wasn't easy to discover it, that user has been lucky to find a knowledgeable support . Buggy is version 4.0 and bug remains after updating to 4.20, but as you could see, if you go directly form 3.40 (which works) to 4.20 then all is ok.
This affects all the units having in sw changelog: "Fixed potential combo corruption when updating software from 3.60, 3.70, or 3.80 to 4.00 and higher."
Probably the support you contacted stays in the dark about what's happening with these firmware

This is "so Garmin" lol, probably you wont have further problems with next updates too.

PS. Have you made the hard reset after downgrading? This is important to clear NV completely after downgrading.
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