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If your reset to factory settings was successful, the password ***** have changed back to a default.
The default password ***** likely be either
or perhaps 11111 or 00000.
What prompt or error message do you get?
Does the system otherwise show evidence that it was indeed reset to factory defaults?
If the password ***** is still present, then probably that pen-hole reset did not reset the password.
I think you will need to either take the AVIC out and send it to Pioneer, or else take the car to a dealership for the brand, and have them reset the password.
Before trying either of those, though, you should unplug the AVIC device from the vehicle's power/battery. Leave it that way, without any power, for overnight or longer. Then plug it in again, and see if the password ***** is gone and it responds to a default password.