They are 1-4x philips discs but I can only burn them at 2.4x as that is the rewrite speed.
I apologise I am a noob when it comes to this kind of thing, I dont know what the media code is. Is it that code on the underside of the disc? (1405101021208662)
It was version 1.05 as far as I know, then I updated it to the latest version, 1.08 and they still wouldnt burn.