Tried Tdb last night does not work update and burn failed

I wanted to go back to 212D to rule out the new drive being faulty as I flashed it to a plextor first and it writes but fails to verify. I then went from plex to 212 and it writes but fails to verify, On daxon 16x [yeah not the best media]and tygo3 to rule out crappy media (the same disc's wrote with 212 also fail to verify against image using other dvd writers) So disc's did not burn correctly.

So I then flashed to official 212 1.24 firmware and would not even burn to verbatim tygo3 failed within 10 seconds Lol

So I posted here to see if there was a 212D kernel file kicking around, I should have been a bit more specific with my question and I was about to edit my post with "with the given files available at minute" when I saw your reply.

I now have the drive working fully again by using 1.21 firmware as it hates the 1.24 firmware.

Is the kernel file in tdb package if I find a tool to extract the package that is ?

Thanks for the reply