[Aeronyx]

Hi,

I downloaded ardupilot on my Revo mini board and I want to download LibrePilot on it again.
I tried something but the methods that i tried was not successful.

So, how can i do it?

[TheOtherCliff]

Bootloader probably needs to be reflashed.

If ardupilot GCS (or other, like CleanFlight) is working well enough for your that you can flash a hex file, you can build a revo hex bootloader, flash that, then use Manual method to flash regular LP firmware.
https://librepilot.atlassian.net/wiki/spaces/LPDOC/pages/5669026/Firmware+Tab

Else use DFU method:
https://librepilot.atlassian.net/wiki/spaces/LPDOC/pages/29622291/Recover+board+using+DFU