So, it finally worked ! i just reset the profiler as a new one... ! This is the procedure :
In order to reset the PROFILER to the as-delivered-state please perform the following steps:
1. First, create a backup as this process will delete all user data and reset all settings.
2. Press and hold Soft Button 1 (left above display) while powering on into Tuner Mode.
3. Keep holding the button until "System Maintenance " appears on the display.
4. In Maintenance Mode press "Recovery", "Flash Init", "Yes", "Ok".
5. Then press the EXIT button and reboot or simply restart the PROFILER via the chicken-head knob. The PROFILER will now start empty without any data.
6. Restore the backup via USB memory stick. The process is explained in the manual. The PROFILER will restart automatically.
7. Shut down. Press and Hold the two buttons RIG and SYSTEM while powering on. Keep holding until message appears "Initializing…".
The PROFILER will now start like a brand-new device under current software and will ask for your confirmation of date, time and Owner Name entry.