To Slimmmmmm,
1. I did delete the IOS 249 stubs and install a Waninkoko cIOS. I will double check. I used rev 17, but I did try other versions (10,13,15).
2. I used Memorex DVD-R, burned with nero 9. I haven't tried IMGBurn but will test. In my experience, all the backup games (more than 30)...