Originally posted by Khujo
i replaced a 851s with a 811S for that very reason, the 851s would only write 4x on the exact same media that the 811s would write 8.1X
You did what? I'd never replace a 851 with a 811, based on what I see here on this forum...
The 851 is capable of writing 8x on 4x media. LiteOn just disabled that because they wanted to be safe and didn't want people whining to them if they burned at 8x using poor 4x media.
If you want the 851 to write 8x, all you have to do is patch the firmware (actually, just 1 byte needs to be changed to enable 8x on RICOHJPNR01 and another byte to enable MCC02). Search the forums for instructions on how to tweak your 851 firmware.