So, I got this Xbox 360. I'm using iprep 88. I was so Stupid!

I assumed the box had a Lite-On drive inside but in fact it is a Benq. So I made the dump using dlit for lite one, and flashed it in as lite on with the CK3 and probe. The dump appears to be good. Then I flashed it as lite on, but now I have the e65. Since I made the dump as lite on is my original fw gone?
Assuming that the dump has a good key, How do I put it back onto the benq?
Help appreciated.