Ok, so I updated my camera to version 2.625.   On the Dahua 
wiki page, I tried the Gen 2 version (2.626) and the update failed.   I tried the Gen 1 version (2.265) and it seem to work.   Camera rebooted and started working again.
Now ITCPUSH is gone completely!   I can't seem to find a way in this version to configure it?
Or, alternatively, is there a way to get a Gen 1 camera updated to 2.626?
Thanks again for any help.
Camera Info
Device Type: ITC237-PW6M-IRLZF
Hardware Version:  2.00
Algorithm Version:   libits v1.0.349364:Jul 1 2021 338280 0.0.0.  Algorithm is authorized
System Version:  2.625.10BE000.0.R, Build Date: 2021-07-20
Software Version:  2.625.10BE000.0.R, build : 2021-07-20
Soft Build Time:  2021-07-20 13:54:49
WEB Version:  3.1.6.975136