Hello,
I can see that the there is a 1.V5 version firmware for WH16NS58 DUP on their site -
https://www.vinpowerdigital.com/main...downloads.aspx
If you download it, it looks like an ordinary LG firmware with some header. I've cut the header and uploaded it to
https://www109.zippyshare.com/v/eJ4nnxdZ/file.html
Do you think it's worth trying? Or the newer version has the ripping restrictions and there is no sense of using it?