Hello, first post -

I have been uploading some Discoverer files (1:50k full UK, 1:25k national parks) unlocked using Fast IMG Unlocker v2.1, and putting them on a microSD card onto my Edge 800 unit. It all seems to run smoothly except the 1:50k raster maps aren't visible for full UK.

1. Fast IMG Unlocker 2.1 doesn't come up with any error messages on the 2.19gb 1:50k file, and it updates the 'date modified' to the correct time.
2. The Edge 800 unit knows the 'Discoverer 1:50k' map is in there, and has it Enabled. (File name is gmapdisco.img or similar, this doesn't seem to make a difference)
3. With all other maps turned off, it displays the wide-scale rasters up to 1.2km scale; zooming from 800m upwards it then just shows the vectors of roads - so all this data is coming from the Discoverer 1:50k map (since all others turned off)

It seems rather odd.. has anyone else come accross this, or could suggest a remedy?


As a note, the 1:25k National Parks imagery works great with no issues, from files unlocked with Fast IMG Unlocker v2.1. Between the 300m - 800m zoom range it also displays 1:50k map data, though this is restricted to the area which then also contains the 1:25k data.

Many thanks in advance for any suggestions.