Reply With QuoteThe message "Can't unlock maps" indicates that there's a detail map on-board which has at least one locked map tile in the *.img file. In your case, being that it's an LM (Lifetime Maps) device, its map entitlement should be supplied 'locked' but with the appropriate UNL & GMA files to allow the device to read and use the maps.
Although you don't specifically mention this, the tone of your post seems to indicate that once it does boot up fully it can operate and navigate fully normally, it that so?
Please also advise the details of all IMG files showing in the internal memory's ".System" folder, and if present, also in its "Map" folder.
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Thread: Nuvi 58LMT "can't unlock maps".
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Yesterday, 04:11 PM #1Junior Member
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Nuvi 58LMT "can't unlock maps".
I've got a Garmin nuvi 58LMT which worked flawlessly until a couple of days ago. I used Garmin Express to update it as I'd done many times before, no errors reported.
After disconnecting the device it seemed to take longer than usual to power up. When it did I get a message about no detailed maps available and then that it can't unlock maps.
I've done some research into this.
Reinstalling maps doesn't help. Everything seems to work fine but same error.
Factory reset: nope same error.
I switched the device from MTP to mass storage so I can see the hidden .System folder. Wish I'd known about that before so I could back everything up.
Internal storage says 5.55GB free so it's not full up. Added a 32GB SD card (FAT32) just in case. It's visible but no data is written to it when I reinstall the map.
Only oddity I can see (which may be nothing) is that myMaps on the device give me one option "CN Europe NTU 2026.20 Foursquare" and Garmin Express reports "City Navigator UK & Ireland 2026.20" maps (I'm in the UK).
Chat with Garmin support said basically "it's a brick have a discount on a new one".
I suspect it's a misconfiguration or a corrupted file but not sure what to try next.
Any ideas?Last edited by stevex; Yesterday at 04:47 PM.
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Yesterday, 10:58 PM #2Garmin/GPS Systems GMod.
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