GARMIN ADDITIONS FILES (ASR, G2S, DB, 3D...) What & How to update

I'm just trying to add EU2025.10 as a supplemental map. I have the .img file on SD, along with the JCVs. (I'm not sure how to test that the JCVs are working without being in the EU). Anyway, putting the SIDs on the SD card would keep things neat.

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jaygee Reviewed by jaygee on 28th April 2024. GARMIN ADDITIONS FILES (ASR, G2S, DB, 3D...) What & How to update This tutorial will try to explain you the additions files, what they are used for and how to update these files. In a hidden .System folder of your device will find the files and the folders that support all your device features, will find the IMG(maps) files gmapbmap.img(the base map), gmapdem.img(DEM map) and other folders, the most important for the update are ASR, JCV, G2S and SQlite. Let’s see what and how to update this folder with the right files. Rule N 1 ALWAYS BACKUP YOUR Rating: 5