I had several CC1H drivers and I can tell you none of them was really a BSY nor a LBA0. Trying to apply the fix I didn't get any files back and I can tell you I clearly listened that the sounds they made changed a lot. Something does happen and I am quite sure it is not something good.
I really don't feel comfortable to say that the probabilities of recovery are going to be reduce very little, but it is up to you to try or not. I am quite sure you will get nothing.