Have 6.4.5.11, need 6.4.6.4

My project uses 6.4.5.11; the panel firmware 04.09.01(31) needs 6.4.6.4. This PC has 6.4.6.11 but not 6.4.6.4. Where can I get it? Did I jump too quick on 3.5SP22P1?

Below are the dependencies for the TP600 with FW31.
(Screenshot from the WAGO Download Center showing the TP600 FW31 download.)

So officially, you should be using CS3.5.21.5 with Device Desc 2.0.9.3.

I installed these components just a few minutes ago, and everything worked as expected. The device description includes V6.4.6.11 for the TP600 with FW31.