These files were archived from en.kirisun.com.

It seems like their website was a little misconfigured since it allowed directory listing of the en.kirisun.com/download/ folder.

As such I downloaded all the brochures, user manuals, service manuals, and CPSes for all models.

Files for the new DP990 were not available except for the brochure as of 2018-03-01.

Firwmare update files were also not hosted on that site so I only have updates for the DP770 sourced from the Yahoo Group.

Note that entering adjustment mode is not documented at least for the DP770; a file called "adjustmode.txt" in the programs folder allows this for newer versions of the CPS.