So i have the VTO3211D-P2 and the VTH2421FB-P and somehow i can't unlock the door from the vth but i can unlock it with my phone with easyviewer pro. Any solutions? in the unlock logs i get the card unlock fail.
On VTO it should be in webif just under der Softwareversion info in field "MCU Version Info".
On the VTH in settings / SW-Version.
Anyhow, I suggest to reset your VTH and configure your VTO again according to the manual. I'm pretty convinced that this will solve it.