The waypoints need to be in a format the Hook2 can use, and on a SD card.
Page 84:
Importing backed up files1. insert the memory card containing the backed up files in theunit's card reader.2. Open the Files dialog from the tool panel and select thememory card.3. Browse to the file you want to import and select it. This opensthe details dialog.4. Select the import option and follow the prompts.A message advises when the import is completed.
I have the Hook2-5, but I have not actually done this. Hope it helps.
"Alive without breath, as cold as death; never thirsty, ever drinking, all in mail never clinking."