Once you get the new BECM power board installed and it running properly, and are ready to do the ECU swap...
Remove old ECU,<br/>
Refit new ECU,<br/>
Before trying to start it, with the nanocom, key in Pos II, Go into P38 -> Motronic -> Motronic -> Settings. Arrow across to the 3rd page and at the bottom is 'Immobilisation Code' write this number down.<br/>
Then exit out back to the list of ECU's.<br/>
Turn ignition OFF (BECM responds best to diagnostics with ignition off)<br/>
Go into BECM -> Settings -> Alarm. You should get 'DIAGNOSTICS MODE' on the message centre. Don't worry if you don't just yet as long as you can still talk to the BECM!<br/>
Arrow across to the last page and you will see a box with 'Immobilisation Code' above it.<br/>
Tap the white box, and delete the original digits. Write in the digits you wrote down from the settings in the engine ECU.<br/>
Press Red X once,<br/>
Press 'Write Settings'<br/>
You'll get a confirmation.<br/>
Then exit out and 'DIAGNOSTICS MODE' should disappear from the dash.<br/>
Then put key back in ignition, and start her up!<br/>
Hope this helps..