unable to update server using steam cmd

[guesswho2778]

unable to update using the "app_update 1110390" command as steam cmd thinks it already has the current version when there was a silent patch last night that is rendering fiends game installs incompatible with the server.

[guesswho2778]

please update the documentation and say that you need to use "app_update 1110390 validate" to update the server