Seriously, I was wondering the same thing. What exactly is there to investigate when clearly we are all having problems because of the update. Just roll everyone back and save yourself all the trouble!
When turning Roku 7103X on, require restart to connect to wireless network then again to stream. TCL 55P607, SW 10.5.0 build 4201-30. When attempting rollback, receive message All software is up to date. As a hardware/software integration manager - you're process is broken. Each succeeding update has made my device more unstable. Voice response became so unreliable as to be useless.