Does your Jornada 680 have 16MB or 32MB of RAM?
If 32MB, can you try going into Control Panel -> System -> Allocating more RAM to storage memory so you can use ActiveSync's file explorer to copy the file? Then use
https://www.hpcfactor.com/scl/1181/Christian_Ghisler/Total_Commander... Total Commander to copy the file to the CF card?
If 16MB, can you try using ActiveSync's file explorer to just drag and drop the folder into the storage card directly?