Thanx a bunch!
Are these Topo premium v3 combined via Gmaptool app to two .img files, each under 4GB?
I got all these maps up and running, and did some experimenting, trying to combine eastern part of southern Norway with western part of southern Sweden, ending up with .img files of 3-4GB. Seems like the Astro 320 dislikes big files - works, but becomes awfully slow. No wonder really, since the unit and its computing power is from 2011? Found that it is better for ok speed to have several, relatively small, .img files on the card, and only activate the ones I need now.

I tried finding a topo sweden map including property borders, and found a topo pro sweden v6 download from tPB, but the Astro doesn't recognize this .img file (tried naming it gmapsupp.img and swev6.img, both to no avail).Any ideas? Are these .img files locked somehow? How do you unlock them? Gimgunlock?

Moderator Note
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That's why Garmin break down Topo maps in to small regions, there is an expectation that a person hiking would not be able to walk greater distances than a couple of regions .

Can't comment on downloads other than from NaviTotal ,a trusted source & known to work.
new-maps/topo-sweden-friluftskartan-pro-t21884.html?hilit=sweden#p179625

You may have to change the Code Page value.
new-maps/garmin-trekmap-italy-pro-t20541-30.html?hilit=imgtool#p179122

Cool!
Downloaded the Friluftskartan v6 from here and got it working straight away! THANK YOU!
Garmin claims property borders are included in that version, but I can't see them on my Astro. Maybe not possible?

"Innehåller 500 km² med BirdsEye Select Sweden Prime" i skala 1:10 000 som du enkelt kan anpassa och hämta med hjälp av vår BaseCamp™" Is what it says on Garmin's Sweedish web page. Translates into something like; 500 sq km available with BirdsEye Select Sweden Prime in scale 1:10.000. This can apparently be downloaded via BaseCamp.

Is this something that would be possible even for the map I've got now? Maybe it's in this portion the property borders are found?

Read
[Please Register or Login to download file]

Downloaded the North.rar and popped the .img file into the garmin folder on my sd-card.
I get the error "Cannot authenticate maps. Contact the map content seller for help." when I power up my alpha 200i.

Did I not do it right?
Is there a work around this?

Moderator Note
A search "alpha 200i" unfortunately reveals there is no work around
post180764.html?hilit=alpha%20200i#p180764

Do these downloadable files (South.part1.rar, South.part2.rar and North.rar) contain Topo Norway Premium version 2 or is it indeed version 3?
Thanks.

Moderator Note
TOPO Norway Premium V2
new-maps/topo-norway-premium-t7727.html#p180458

Has anybody seen TOPO Norway V3 yet?

Ursula