Garmin img. file , basecamp and more help needed

I have 2 IMG files for Ireland and was hoping to get them to work on Memory map, has anyone got any idea how to change these files over to QCT or MMO files to work on Mem Map?
They open up from the SD card in Basecamp perfect but cant transfer them to my PC, i have transfered from SD card to PC but Basecamp doesn't recognise them that way. Been searching for days and still no closer on how to do it

I'm not a Garmin expert but changing the extension of a map file makes it usually useless. The mapmakers want you to use the necessary program because they get a piece of the money. There are contracts involved. You would have to have a Garmin nav program.