Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
@acris you made may day! tks it worked like a charm!! tks for the support
very strange, I use usb key in rpi2/rpi3 without problem. Do you have reinstall recalbox in another microsd ?