Hello, I have managed to get 10.6.0 running on my d620 with d620slv1.iso, I have upgraded the bootloader to rc5 665 and rebooted with no problems.
next I updated to 10.6.6....
rebooted and it loaded up updated.
with a few issues ie no airport, perhaps as expected.
Now I backed up and deleted the contents of the /Extra folder and replaced with the latest Extra zip contents.
I now ran /edptool.command, which choices do I make next? When do I reboot? As I must be doing something wrong as when I do reboot the bootloader fails....it tells me to restart grey screen etc.
I then have to reinstall from scratch as the old bootloader from the d620slv1.iso rc3 won't boot 10.6.6.
I am gradually learning and making progress... through trial and error and with great thanks to this site!
Any further help be greatly appreciated.