Alternative firmware fo kenwood dnx520vbt

Hi man
I don't find any way to put the system in pre-boot .
I have only the splash screen GARMIN.
In my Radio there are a few sequence with buttons and reset but it's only for test mode or pre-boot of the radio system
I already tested all the sequence in particular FUNCTION + EJECT + reset put the radio in test mode but nothing change
So I think no way to put the garmin unit in pre-boot.
Yes already using in my test updater and right rgn to recover "System Software Missing"
So I start to dissasemble the unit
Before to start any other idea to test any other software ?
Thank's

Quote:

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Originally Posted by jpnos [Only registered and activated users can see links. Click Here To Register...]

Before to start any other idea to test any other software ?

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No software will help until you enter the pre-boot mode.
Aslo I'd suggest you to wait a few days before disassembling it :) Maybe someone clever comes here and tells us the right pre-boot mode combination.

Ok
it's right .....
this time I'm at work and it's impossible to disassemble .........
Thank's
Best Regards

If you have system software missing on screen then you already in pre boot mode.
Conect radio and Pc and run updater.exe and updater will see your radio with serial 0, if i think that updater will see like "Device 0"

You must flash with updater + .rgn, gcd wont work and also wont work flash over SD card.

Hi
no I don't have the SYSTEM SOFTWARE MISSING
only a screen with logo GARMIN
Other time i tested different firmware and arrive SYSTEM SOFTWARE MISSING
connect usb and restart with correct firmware.
This time don't arrive this but only a fixed screen with in the center write GARMIN

If you publish photo of navigation system board, I can mark testpoint pin for get into pre-boot mode.

Thank you
this week end I dissasemble the unit and post the photo of the board inside the radio system .
Now I am at work and is impossible to do .
So I must extract the radio from the car and then disassemble .
Thank's in advance

Good morning
I just removed the radio from car and this morning I dissasemble the equipment and post
photo of the garmin unit .
I hope to do a good work

Hi man
this are photo of the pcb
Alexander 2010 I'm on your hands

Int this position can be mount pre-boot button