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How to fix for AVH-W4400NEX boot loop


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I created an account on this site just to say thank you to all contributors in this thread.  I was surprised to find out how common this issue is and just how simple the solution turned out to be.  Got my W4400 back up and running!

 

Thanks again - cheers!

MN

 

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  • 4 weeks later...
On 2/25/2021 at 3:45 AM, industrial6 said:

I had the exact same issue recently, and used this same image written to a 32gb MicroSD in an adapter with no issues. I was able to manipulate the front bezel after removing just two screws (and not the mechanical slide on the bottom) to eject the OE SD card and tightly insert the replacement, done in 5minutes. Just in case that link goes down, here are the known AVH/SPH images as a backup: http://sixgov.com/filestorage/forums/avic411/

hallo, sorry can i get the password for avh 8800 image?

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  • 2 months later...
On 4/6/2022 at 5:56 PM, RRamirez said:

Hello All,

   I started having issues with my AVH-W4500NEX on Monday and found this thread today. Where can I download the newest firmware from to fix this bootloop issue? TIA

I also have another issue with this HU. The front face does not open up and slide out when you press the button. any ideas? It never has since new.

 

Robert.

 

On 4/6/2022 at 5:56 PM, RRamirez said:

Hello All,

   I started having issues with my AVH-W4500NEX on Monday and found this thread today. Where can I download the newest firmware from to fix this bootloop issue? TIA

I also have another issue with this HU. The front face does not open up and slide out when you press the button. any ideas? It never has since new.

 

Robert.

Mine was opening either but that was because the aftermarket stereo lit bezel was too snugged. I ended up trimming too n bottom of bezel and now mine HU opens

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El 24/2/2021 a las 15:45, industrial6 dijo:

Tuve exactamente el mismo problema recientemente y usé esta misma imagen escrita en una MicroSD de 32 gb en un adaptador sin problemas. Pude manipular el bisel frontal después de quitar solo dos tornillos (y no la corredera mecánica en la parte inferior) para expulsar la tarjeta SD OE e insertar firmemente el reemplazo, hecho en 5 minutos. En caso de que el enlace se caiga, aquí están las imágenes AVH/SPH conocidas como respaldo: http://sixgov.com/filestorage/forums/avic411/

hello, password of the compressed file avh-x8800 please

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  • 2 weeks later...

Hi all,

I have a 4400 w/ this issue. I followed all of the instructions, and really didn't hit any snags - I thought it was going great. Flashing the SD card went just as everyone said it would, disassembly was all good... Then I hooked it back up to the car and started the car, and absolutely nothing happened. There was no sign that it had powered up. The display was completely dead (not just blank -- it appeared to be not turned on at all). Although I did not test the voltage to the wiring harness, my Crutchfield support person walked me through testing the voltage on that just a couple of days earlier, so I have reason to believe that's all good.

I have so many questions now.

1. Is there a way to tell if it's powering on but failing to boot vs. not powering on at all without using the screen?

2. Can a corrupt or misformatted SD card cause this behavior?

3. Anyone seen this issue before? Did you get it resolved? How?

4. I used the very long disassembly procedure in the originally-linked video. Could something simple like a loose ribbon cable cause this?

Thanks in advance for any advice.

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Q#1. I would think that if there is power going thru the unit you should be able to tell. 
Q#2. No, I do not believe so. 
Q#3. I personally have not seen this. 
Q#4. I think that a loose or incorrectly attached ribbon cable could cause this. 
 

If you or a friend has a voltage meter I would check the plug that plugs into the back of the unit to see if it is getting power. That’s the first thing I would do, could be a blown fuse. 

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