Hi FNG, thanks for your post.
Discussion on software cracking is strictly forbidden here. Please see possible solution below.
Free up space on OCN6 memory card:
You may free up around 1GB to 1.5GB using the steps below on a 2GB card or a few hundreds MBs on a 1GB Card:
Read First - How do you make a complete backup of your OCN6?
http://www.oncoursenavigator.com/forum/default.aspx?f=10&m=5830
and then see the FAQ below:
Source: http://www.oncoursenavigator.com/forum/default.aspx?f=10&m=5314
Q11: If i get the 2gb microsd card, can i then get remove some of the maps (like canada) to recover space? Also - can i later copy the maps i remove back to the card incase of need?
A11: Yes, we recommend you back up a complete copy of the original card to a folder in your PC. To do this, you simply copy (not move or delete) the complete contests of the original card to a folder in your PC.
Once done, you may then delete individual maps from SD Card\OnCourse\Maps folder. To use any of the deleted map(s) in the future, you just have to copy