I just worked on Beta 6 of the booktype firmware. This version is based on HP 420i 1.25 firmware I implemented the +R writing strategies from the 1.06 NEC 2500A firmware.
Most common 4x DVD+R’s and 4x DVD-R’s should work @ 8x now, including RICOHJPN R01! It also has extra media support for previously unsupported 4x media!
Have fun testing!
Please post your results! Set the booktype with DVDInfoPro and burn with Nero 188.8.131.52!
Donations using Paypal are always welcome of course