As you might know i have had some serious troubles regarding making Xbox backups on my Nec3500.
Fortunately i have solved the problem, it took me about 6 ( and one DL) coasters before i could find a good firmware, but i’m happy to report that The Dangerous Bros firmware 2c7 (windows flasher) does the job.
Nec 3500 firmware tests xbox related
Used media : Platinum DVD+R SL 8x on 12x
Used software : Nero 6.3.1.20
w216 : nope, coaster
w206 : nope, coaster
w2f8 : nope, coaster
w2c7 : YES YES YES !!! It works. 2nd attempt also is successful.
Experimenting further :
Used media : Verbatim DVD+R DL 2.4x on 4x
Used software : Nero 6.3.1.20
w2c7 : YES YES YES !!! It works.