Hi!
I tried any solution without a result. As I told the "experimental version " af the original image which was installed on my VU+ does not allow any backup neither on USB, nor on the HDD. I can't install any USB image, as I told. I tried any type of format, worrying the windows formatting process, I formatted my USB Keys on the VU+ SOLO4K device, with the remote control menu option to do that, trying the front, then the back, next the front USB slot. Nothing to do! It's impossible for me.
I think the solution stays in the file rights and authorizations, but I don't know Linux enough to find the fault.
If you know more about this fail?
Thank you for the link anayway. I'll try it tomorrow.
Best regards.
jmdavet