Hi, I'm new to this forum and I bought a Garmin nüvi 225W 3 years ago. Browsing the internet, I found out in this forum that it's possible to update the maps to the latest ones. I tried to install the newest ones from the 2025 maps thread and took the following map from that thread. I put it on a 64GB SD card as I downloaded it (inside the Garmin folder), but with the original name, it didn't detect anything. I changed the name to gmapsupp.img, and when I turned it on again, it now shows the message "cannot unlock maps". What am I doing wrong?.

Thank you.

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cordenospe Reviewed by cordenospe on 22nd August 2024. Garmin Nuvi 225w questions Hi, I'm new to this forum and I bought a Garmin nüvi 225W 3 years ago. Browsing the internet, I found out in this forum that it's possible to update the maps to the latest ones. I tried to install the newest ones from the 2025 maps thread and took the following map from that thread. I put it on a 64GB SD card as I downloaded it (inside the Garmin folder), but with the original name, it didn't detect anything. I changed the name to gmapsupp.img, and when I turned it on again, it now shows the Rating: 5