I forun only 1.18 version for delta.
Only way to get master code for instant nav is:
1. you need VIN number and serial number on HU, contact Fiat dealer, and that cost me 100EU.
2. desolder BGA eeprom chip from board in HU, read out dump codes, and resolder it back. I didn find any who could do it. Even in special shop that repairs engine ECUs etc