Bxrider117

So I have the 4400nex that had the same system error and then my screen would flicker on and off. I purchased this sd card https://www.ebay.com/itm/PIONEER-AVH-W4400NEX-SOFTWARE-ERROR-SCREEN-FIX-SD-CARD-WITH-OPERATING-SOFTWARE/133451618921?hash=item1f12561a69:g:fRYAAOSwNnRYjRi3 I installed it meself and now my radio boots up great. I'm glad I saw this forum.