iveco daily key

[QWS]

Hello everyone, can someone tell me how the key in Iveco daily 2014bsi calculates the checksum? I manually increased the number of keys from EEPROM, and I wanted to know how to calculate the checksum. Thank you for your help.

[12manux]

I did a similar job before. Tango can do the job (id46) . Need to write back dump to BSI.