Need some help

Ive done searching and it seems when people ask it a special person sends them a PM with info how to fix this.

I bought a scratch and dent head unit from an authorized online retailer. Got it, everything looked great. Wired it all in, put the dash back together, and was greeted with a Password screen with the hint listed "home".
 

Called the retailers support, they say there is no universal password, my choices are pony up the extra cash for a new one, pay to send it to pioneer, return the head unit... or ask you guys for help.

I can provide the invoice to prove its not stolen to whomever can help.

Thank you!

 

Use testkey_A. and use file manger to reset the password

having a problem with this myself nex4100 put radio in different car and cant remember my password ive downloaded the tools onto usb drive but it doesn't  boot up to anything but still wanting the password key am i missing something ?

Brand new to the forum and to newer pioneer units.  I have an AVH4400BT right now that I bought used and have never seen or needed any type of password.  

I just ordered a 4200nex and should be getting it in a couple days.  I've seen a few threads here about passwords and recovery, does pioneer make you input a password when it first boots up?  What am I missing and what do I need to know?