I've searched and seen this question asked before but couldn't find an answer. I bought the radio from a guy about 6 months, installed it today and apparently it has a password. I have no clue what it is or how to get a hold of the guy I bought it from. Is there anyway to reset the thing, so I can use the radio? Thanks in advance 

https://www.ebay.com/itm/Password-Unlock-Removal-Pioneer-AVIC-AVH-4200nex-5200nex-6200nex-7200nex-8200NEX/222695825806?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D47301%26meid%3Da94c89f0665e4c17b9b62f97fd6aa804%26pid%3D100623%26rk%3D4%26rkt%3D6%26sd%3D131887987550%26itm%3D222695825806&_trksid=p2047675.c100623.m-1

https://www.ebay.com/itm/Anti-theft-PASSWORD-REMOVAL-for-Pioneer-AVHAVIC-NEX-Series-4000-8200NEX/112782434610?hash=item1a425b6132:g:~40AAOSwOA1aPcYY

The link don’t show nothing