hello again ,
I have 100 units that I monitor using the dude - all of them are v5.02rc and I want to upgrade them to v5.7
how can I do this?
When I press the "upgrade/Force Upgrade " I get nothing.
What do I need to do in order to make this work? I don't want to go to each device.....

Thank you!

Sorry - found it!
but I have another question about it
how do I know if he is working\transfer\upgrade?
when I go to devices-->RouterOS , I see in the Upgrade Status : "upload failed unknown session id (4)
what is it?

and 1 more thing -
if I want to upload to them a new files (let say - change a picture of the hotspot) - how can I do this also?

Thank you