Ok. First time here and I don't know much of linux.
I had installed OMV5 in my raspberry Pi 3B+ (working properly) but I had to downgrade to version 4 because I need access to Plex, and for me it's better to have it integrated inside OpenMediaVault.
I have loaded the Iso file on the sd card (tried both Rufus and Balena etcher). But the raspberry pi doesn't seem to output any kind of signal. I have connected it to a monitor, Nothing. In the admin page of my router (when It's connected via ethernet) it doesn't see it.
What should I try?
Note: The raspberry pi works and I'm sure about that.
(sorry for bad english and/or typos)