Guess I need to find a working semc 8.6 or 8.7.

I used 8.4 on my w300i but now I get white screen of death, The 8.4 did not have the w300i listed on the drop down list....OY!

I tried 8.7 but I get ' usb smart not found'. do i need a cracked version of 8.7?

THX