I have the same issue and need some help as well.
I am not able to provision any 8xx phones. Snom 3xx phones seem to work fine.
I am on SnomONE Blue and Free, windows and linux and get the same issue and downloaded the latest verion today and still have he same issue. Seems like the 8xx template files are not their or I can't find them. I can't find the 3xx templats in any of the directories so not sure what to add to get this working.
Is there a way to add custom files to make some changes to the base configuration files and where are they?
Any help will be appreaciated. Cutover this weekend is on the line.
Thanks for your help.