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Discussion Starter · #1 · (Edited)
Here have collected three methods to read N13/ N20/ N55 ISN by CGDI prog BMW MSV80 key programmer.

Method 1: Read DME ISN via traditional cables
Method 2: Read DME ISN by professional wiring harness (No need opening DME shell)
Method 3: Read DME ISN by updating CGDI prog BMW authorization (No need opening DME shell)


in detail...

Method 1: Read DME ISN via traditional cables
Use this method need to open the DME shell
It takes much time to connect the device with traditional cables


Method 2: Read DME ISN by using professional wiring harness

Compared with method 1, it’s more convenient to read/write N13/ N20/ N55 ISN by CGDI BMW key programmer and professional wiring harness. No need opening the DME shell, just unplug the port from the car and connect the harness with DME.

Note: The wiring harness only can be used with the corresponding DME, don’t mix them!

It's easy to use, connect the wiring harness to the corresponding DME mode and CGDI prog BMW, then go to CGDI BMW software, select BMW ISN menu and read/write N13/ N20/ N55 separately.

Method 3: Read DME ISN by updating CGDI prog BMW authorization
This method is same as method 2, no need to dismantle the DME.
But it’s the most convenient to use in all the methods, no need to buy professional wiring harness, just need to update the authorization.

the latest CGDI BMW upgrade add new authorization below:
A0000015 B48 B58 read ISN
A0000017 MSD80 / 81 /85 /87 MSV90 read ISN
A0000018 N13 / N20 / N55 /B38 read ISN

Connect your distributor to update, it costs about 70 usd no need shipping.


Hope it helps you!
Thanks!
 

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