I have allot of BMW Diagnostic / Programming gear, Ive done plenty research into coding/programming modules as well as Aftermarket and Genuine BMW Equipment. Its kinda a hobby lol. DME Flashing is extremely hard on these cars and you would probably have more success to get an EWS Programmer and trying to change the ISN Password on the EWS rather than fiddling with the DME, Although you wont be able to swap the DME's then because your one wont work anymore. First off check what version EWS you have to see if you have rolling code ISN but I think you probably do.
'06 E90 325i 6MT | Full M3 Kit | H&R Euro Race | VMR V710 | Colour Kidneys