how can i contact you, need to update my avh 4400 nex 

I also got two questions:

1. I do have an AVH-Z9200DAB unit (European version). Is this fully compatible with the AVH-4400 NEX?

2. Any chances to get the "upgrade" in Europe despite the situation with Russia?

Cheers, Andy

Hello asd255 I bought the avh2avic to fix and upgrade pioneer boot loop on 4500nex .. about a year ago amd just installed in radio which worked as promised however issue I'm having is that I cannot get maestro to work .you had sent me the instructions which I've lost .pr

On 7/14/2021 at 3:43 PM, asd255 said:

MaestroRR is compatible with AVH2AVIC
but you need to reprogram MRR

The original s/n number is not working on mrr I had instructions you sent no clue where they are..any way of getting the instructions again that you send out when people purchase the sd card. 

On 3/17/2022 at 3:50 PM, cyberlocc said:

Really intrested in this, but with the OP being in Russia I cant buy on Ebay or get shipped :(. 

Anyone got this in the states? 

Im also interested in the AVH2avic as we can't purchase from his store from the u.s.

Does it work for AVH-Z9250BT?  I have the same problem, OS keeps looping then black screen.  Any option to purchase the downloadable image?  Please HELP!

Hi sorry to resurrect this from the dead but I came across this searching for help with my AVH-w4400NEX. I cannot get it to reconize my iPhone 16PM with USB C. I plugged the phone directly into the back of the unit and tried to see if it will see the phone but it comes up with an error “No Response”. I am able to get it to work wirelessly. I prefer wired as the sound quality is much better. If anyone still gets alerts for this topic, could someone post back if they know this conversion would work? Thank you. 
 

update: I contacted pioneer and the only things they recommended were to reset the radio and rest my network settings on my phone. I reset both and nothing worked. My last resort would be if someone makes some type of custom firmware for the radio or Apple makes sometyoe of change in a future update.