LG-4163b and CD-RW write speed?

I have a bunch of older CD-RWs that I would like to use, but when I put them in the 4163, it reports max write speed of 4x. The drive can burn CD-RW at 24x, so what gives?

Is there a media identifier code on CD-RWs that it’s reading and limiting the speed because of the media?? I’ve tried both A102 and A103 firmware with the same results.

I don’t think you can overspeed CD/DVD-RWs.