Look here: Kess v2 5.017 is working great with a 2007 BMW 323i 2500 24v N52B25, ECU: siemens msv80.
Tool use :V5.017 Kess V2.23 Kess V2 ECU Programmer Online Version
http://www.obdexpress.co.uk/wholesale/kess-v5.017-ecu-online-version.html
Test process：
