I thought you just plug it in and Garmin software (Basecamp or whatever) does it?
http://support.garmin.com/support/searchSupport/case.faces?caseId=%7B9d0c96c0-4495-11e2-e8a7-000000000000%7D
?
Also, might be relevant: http://static.garmincdn.com/pumac/Updating_Maps.pdf
Cheers, i tend not to have any of the awful garmin software on my computer so didn't know it does that also. Though 50 quid to update the maps i already have seems ridiculous so might finally try the free open map option.
@laner started
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I thought you just plug it in and Garmin software (Basecamp or whatever) does it?
http://support.garmin.com/support/searchSupport/case.faces?caseId=%7B9d0c96c0-4495-11e2-e8a7-000000000000%7D
?
Also, might be relevant:
http://static.garmincdn.com/pumac/Updating_Maps.pdf