Are the two drives different in architecture as I have used the same flash on both but the a04 wont burn datawrite yellows at 2x with prassi I get fails at beginning of disc. Could there be something wrong with the drive. Or is there a flash that will solve the problem.:confused:

There is no A04 drive, they are all DVR-104. A04 just designates a Pioneer retail package (bundled with SW).

thanks mate 

ILL look at the drive been faulty

I have exactly the same problem i bought a load of datawrite yellow discs which my pioneer 104 frequently fails to burn it starts to write the lead in then fails, ive tried firmwares 1.20, 1.30, 1.31 & the latest 1.40 but still the drive fails i also have this problem with white label dvd-r & all dvd-rw discs, i think there is a problem with the drive itself or pioneer fix there firmwares so they wont burn anyone elses discs (i know they did this for TDK discs).

104 ok 

my 104 is ok at 2x with data yellows & primo & 1.40 for all but the A04 isnt just burns at 1x

put 1.40 if you get fails 

put 1.40 if you get fails i got fails with other firmwares but the 1.40 for all is ok with mine but still 1x with data yells

ive tried the 1.40 firmware from pioneer, the 1.40 patched region free & the 1.40 2x for all, i still get fails on datawrite yellows at first (because i havnt long had the writer) i thought my writer was faulty but now i am begining to beleive that they are crappy discs my writer just doesnt like.