how to change file extension dim

hi I have this file but I can't upload with ecm I assume that it is encrypted, anyone has experience on this
I attach the file

with what ? been downloaded? it would seem that you downloaded with equipment slave,though ? so only the master can open it.

thanks giarras ? a file that passed me a friend and do not know with what equipment ? downloaded, I think, bdm dims***t

it may have been taken with the genius . therefore you are? you're forced to massare only through them.

But if ? been bed with BETWEEN....The BDM DIM, must be unpacked by him, cos? you can load only the flash that you need, otherwise that should be the entire file to the ECU.

resolved unpacked with software d**s***t, and proceeds from the flasks