Thanks again, I do agree with you that new A3 approach has more sense , hope they'll made new A1/A4 firmware with the same method.

If I have good understood, burning 2 MCC3R2 disks at 12x and 8x will use only one slot since they share same media code, and learnt info can be used also for a next 4x burning.

If the drive works in this way, what is the best writing speed to make the drive learn good ?

Again, there's one way to store/restore learnt stategies ?

I do like to try new firmware hacks , as all in this forum, but i also like not to start from beginng each time i restore the version i like the most.

Sorry if all these questions were very noob, i tried to look for these info in the forum before asking but found nothing .

Thanks again for your hacks and answers



Gyxx