Of course, thanks Loly. The .rgn has been converted to a .gcd by WebUpdater and then loaded to the unit. I don't see that in fact the keyboards .rgn file is at all capable of being effectively used that way. Although the .gcd filed is loaded to .System it's then totally ignored on reboot [there's no boot.bin]. This is why Smokefree was unable to load the keyboard folder that way. This is not what WU does when it downloads from the server itself, it places D162200.zip in the Garmin folder to be utilised on next boot.
On looking further at the 64KB gcd file with RGN_Tool it is empty, however when checked with a hex editor it contains seemingly valid info. Can anyone enlighten me?