I must be super dense but I really can't figure out what to do with these .img files after I've downloaded them and unlocked them! I've tried just adding them to the SDHC card, I've tried putting them in a folder called map on the SDHC card, my Garmin just doesn't see them. Thanks for any help!
EDIT: I'm seeing some posts that say to put it in a folder named "Garmin" so I'll give that a go and report back! Thanks for the help!!
EDIT EDIT: SUCCESS! Man do I feel dumb. Thank you all!!!