Robots deployed with robot version 9.33 are not updating OS version for Device details in OC.
Only after, if we update the robot version to 9.33 HF2, OS version is discovered in device details in OC
But all the robots are installed by 9.33 rpm file. Please share a new rpm file which has 9.33 HF2.
Release : 20.3
Component : UIM - ROBOT
The robot_rpm.zip of 9.33 HF2 has the fix for this issue, which will be included on the official UIM 20.4 release.