Earthmate PN60 recalculate error in GPS technology and devices Posted April 14, 2014 Thank you, 39 steps. I, too, had the same recalculation error on my PN-60 and your procedure worked perfectly!!! <Page>+<Menu>+<Power> for about 7 seconds through the splash screen until the blue and white WARNING screen shows up. Press ENTER to Continue: <ENTER> Arrow down one to System... and press <ENTER> Arrow down four to Delete all Route files and press <ENTER> Are you sure?: Arrow down to one to Yes and press <ENTER> Operation successfully completed. Press ENTER to continue: <ENTER> <QUIT> to return to the main System menu Arrow down two to Reboot and press <ENTER> to continue on your merry way. Thanks so much to all of you that posted/discussed this fix. I was having the same issue and this fixed the problem! Thanks!