Who makes Memorex true 8x?

Can anyone confirm who is the manufacturer of the Memorex True 8X drive?
A friend of mine has one and it doesn’t exactly burn to par. Firgured maybe crossflash and update…

Pioneer 107d.

Actually they box 3 different drives.
Pioneer 107
NEC 2500A
LiteOn 812s

Go here to figure out which one he has. It’s a bit confusing on their page but you can do it.

Memorex DVD+/-RW True-8X = Pioneer DVR-107D
Memorex DVD+/-RW True8Xn = NEC ND-2500A
Memorex DVDUR/RW 8412AJ = Liteon LDW-811S
Memorex DVD+/-RW True8XI = Liteon SOHW-812S

In the future you may use the resources at rpc1.org to make these determinations: http://forum.rpc1.org/dl_firmware.php?category=4&manufactor=20