This was optorites reply to my email:
I don't think there was any changes made to the firmware program other than the revised BIN file. However, I am not sure why you are experiencing the writing problems you have stated.
A. Can you burn to either of those Ritek brand discs with the 150E firmware?
B. What is the media code information for those Ritek discs?
1. Download,install and run the program from http://www.dvdinfopro.com/.
This program is freeware.
2. Insert a blank DVD disc into the drive.
3. Click on the "Media" icon and a new screen with a bunch of information should appear. Let me know what the media code is.
C. Any hardware/software changes made to the computer recently?
I replied g04 and r03. and that i had 6 coaster out of 10 with the r03 using 150E. Thats why I tried upgrade to 160E. Awaiting their reply.