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I am trying to get an M44 transplant running using an EWS emulator on the original M44 DME. Unfortunately the original EWS module and keys that were paired with the DME are in a donor car that is long gone, which is why i need an emulator. INPA can read the ISN off the the DME without problems and all communications using INPA work perfectly so there is not likely to be any problem with my cables etc. However, when I switch to the emulator software to try and write the ISN to the EWS emulator chip I cannot communicate with it. Everything seems to operate fine, it tries for a while, then returns a message "No echo from k-line". Has anyone successfully done this and got any ideas? The basic approach I am taking is described in the link below, although I got the identical looking emulator chips from Aliexpress... https://www.ecutool.com/bmw-ews2-ews32-emulator_7875.html
