Win32 DLL Reloaded !

I'm trying to debug some CLR UDTs that uses unsafe acess to a win32 dll, I'm modifying both the win32 DLL and the UDTs DLL at the same time.

To let SQL server load the win32 DLL I've put ot into the ...Binn directory, all worked ok. Now I want to update the win32 DLL... and here cames troubles :

- I've tied to stop sqlserver / overwrite DLL / start sqlserver, but does not works. The DLL is also 'overwiteable' while SQL server is using it... this makes me think that sqlserver stores the win32 DLL in other places (maybe inside the DB) and does not uses the original one in the Binn dir

- I've tried to reload the CLR assembly, doen't works

- I've also tried to drop and recreate the assembly and doesn't works too... anyway this is not even possible in a production server since it would require me to drop all tables that uses the UDTs.

(does't works means that the win32 DLL behavior is the same)

Anyone knows how to do this basic task ?