Quality of Burns?

disks are TYG02

I have a Philips DVD8701 Burner in my dell with the standard firmware it came with. Now my question be, I dont know how to flash. Would the pi numbers be better if I do?? or are they normal results. this was scanned with my Sony DVD -ROM.

These graphs are prety nomal and average burn, will plyer in any player so you don’t need to do any flashing.

Ok also when i burn. I scanned a pic of the disk. You can see like a second " inner" Circle. I never got this before , IS this normal or my burner dying?

you can see it very lighty because of the scanner.