Downgrade thin client agent

Hello,

We use HP Device manager 4.4.3.

All our thin clients are of the same agent, except one with the 4.5 agent so i can't deploy an image.

Using update agent task also fails.

How do i downgrade the agent on the client as it doesn't communicate with the device manager.

Is there maybe an 4.4 agent to download and install manually on the client with a usb drive?

Thanks in advance