My Synology Disk Station 207 has been giving me trouble with connecting to my Linux based Samba network ever since I upgraded the firmware to DSM 2.2-0942.

Having tried everything I could to make it work and read hundreds of google’d sites and forums I decided yesterday to reinstall the firmware upgrade just to prove if it was an issue with the install.

But, Synology will only allow an upgrade of the firmware. I wanted to reinstall but DSM 2.2-0942 is the same as DSM 2.2-0942 and the process was rejected.

In order to make it work I accessed the server via SSH and edited the /etc.defaults/VERSION file and changed the minor version number from 0942 to 0941 and saved the file.

My next attempt reported the version as 0941 and the 0942 was accepted as an upgrade.

So I would expect that making this type of change will permit downgrading of firmware as well. I note now that this is documented in the Synology forums but there is mention of needing to edit /etc/VERSION as well as the /etc.default/VERSION but this was not my experience.