Corona V6 + Team Xecuter Deamon + CR4 XL

I bought a XBOX 360 E 4GB a few months ago and it was corona v6. Then I heard about the new CR4 XL that is coming out this October. So I was thinking that I wanted to dual boot my XBOX 360 E using the team xecuter demon but it says it doesn't support corona 4GB. So I was thinking that CR4 XL supports all corona from v1 until v6. So here are my question:

1) Can i still dual boot my xbox 360 with demon and cr4 xl.
2) if can't, then is there any other product that can dual boot.

plz reply as...

Corona V6 + Team Xecuter Deamon + CR4 XL