Disable IDRAC9 BMC watchdog timer

Hi,

I have a bunch of R640 which run the open-source oVirt OS for virtualization. For some reason I'd like to disable Th eBMC watchdog timer through the IDRAC9. The BIOS watchdog is already disabled.

Using the IDRAC, if I browse to "IDRAC Settings/Services/ASR', it is noted "Activated". Logged in as root, I select "deactivate" then "apply", a pop-up says setting applied but the value still remains "activated". I refreshed the page and logged out/in, but the value remains activated. Tried several times.

Is there something than can lock this setting?

Attached a screen-capture (in french), which shows the state after disabling the setting.