I've read many threads with dislike of this burner. However, I have had no major issues with it and have just choose to upgrade the firmware. When I try to upgrade to GD30 the error message (below) indicates the model is not supported. Does anyone have some help or suggestions? PHILIPS DVD+-RW DVD8631 Current firmware : 9D03 ==> New firmware Version : GD30 Linear CheckSum : 15A1 Rotated CheckSum : BF05 Check Sum match !! This Model is not support. On Command Fail !!