New beta Plugwise Firmware 2.27, Release 20090908 available

[Akatar]

normal:
close the source and start plugwiseupdate.exe
if that doesn't work you need older source software.

[roheve]

normal:
close the source and start plugwiseupdate.exe
if that doesn't work you need older source software.

That worked, starting the updater exe directly. Now this 2009 module is also updated to the 2011 firmware version, and that seems to be the latest version available for this hardware, which seems fine to me.
Still strange that the update button is grayed-out, but now I know the workarround.

Also noticed that this version of 'source' does not need your NAW data anymore and just asks for only an email-address instead.