With "Kindle Collections" isn't that considered a hack where you add the font directly to the Kindle itself? I sometimes have difficulty following instructions and hope I do okay tomorrow

Hope this does work on the DXG as it says it does.
But I did download the plug in and made sure it shows on my toolbar. So the instructions must have been somewhat good. That is why I decided not to do the firmware update the instructions were not clear to a non-geeky person.