"Supported Write Speeds" and Advertised write speed in ImgBurn Support Posted July 27, 2010 Hi, i bought some Verbatims DL DVD's ( MKM-001-00 ), The disc shows "2.4x", and in the box says "Up to 6x" But imgBurn Supported Write Speeds says 4x. That's actually your drive's supported speed with those discs; Imgburn is just reporting it. My question is should I "force" 2.4x or go with 4x, or update the drive firmware?. Definitely update your firmware - looks like there's a newer version (SB04): http://www.firmwarehq.com/download_1668-file_SH-S223C_SB04.exe.html If you "forced" 2.4x, the drive would burn it at 4x (if that's all that's supported) anyway, so that would have no effect. Thanks for the quick reply, I'll update the firmware when i get home and post results. Is there any web page that actually reports what the updated firmware actually fixes/add ?