The easiest way is to use an already patched firmware, as you did with CS0M. And if you want to use the ledfix you have to until C0deKing has the ledfix-tool ready. When using stock firmware you have to patch it yourself using Omnipatcher. Because your drive is in fact still a 1633 you cannot use firmware from the LiteOn site.
For the booktype-utility I thought you have to use version 135. BTW, I had the booktype permanent changed with BS0S, went to CS0K, then CSTJ and now CS0M and the booktype stayed dvd-rom al the time!
Enjoy CS0M :iagree: