PlenetCNC mk3/4 not booting

Hi there,
I have an issue with a PlanetCNC MK3/4 control board that is not willing to boot anymore... The CNC was working fine for a few month and then our client couldn't use his machine for a few month (medical reasons. When he came back to the machine the App couldn't find the board anymore.

In File-Settings-Connection I can only find the bootloader but not the board itself.

Tried the manual boot procedure from youtube, didn't work either.

Does anyone has an idea? It has happened twice in 1 month (different customers)...

Thanks,

A while back all boards lost ability, you need to update the software from Planet. It was relatively painless process.

Quote:

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I can only find the bootloader

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Which bootloader? V1 perhaps? Is it possible to get screenshot of File/Settings/Connection?