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Manually delete all installed maps including unlock files. The easiest way to find them is by installation date.
Then do a reinstall.

Reconnect to the PC, run GarminExpress and choose to reinstall the maps.

New update GE v 7.20.30 has been released

GE 7.19 is verified to work for PC installation

New GE V7.20.1.0

With new GE you can ´t install maps on jour PC. Error download.

With old ver. install without problem.

Don´t update GE to v 7.20.0.0 befor dowenlad CNNTUEU2025.10!

SD mast be Fat32 formatted

All enabled maps are at least partially loaded into the device's cache when the device is started, and if this data is too much, it simply cannot work, and as a result, no details are plotted and no calculations are performed.

I uploaded them to three friends who were traveling there and none of them had any problems. They are all back….
This is the trace of the last female traveler who returned a few days ago.