Immo Nissan Cabstar

Hello friends 

I can't disable the immobiliser on Nissan Cabstar 3.0 2005 here are the references of the ECU: 0 281 020 061 and I attach the files. The basic breakdown is P1612 could you help me? 
Thanks to you

Immobox was disconnected ?

Immobox was disconnected ?

Yes ! Before ecu plugging

Try this solution

Hello friends I still haven't solved my problem, I write a Virgin or off file, and the immobilizer area rewrites after turning on the ignition (immobox unplugged)

Would it be possible to install an eeprom with writing protection? It's a 24C04

Thankssss

Finally I put an eeprom 24C04WP. How do I configure write protection? Thanks to you