Downgrade Ds9

[Glauco]

Hello ,
When DS upgrade my system to 44.07.33.32_NAC‑r0
The lane assist and camera doesn't work. Iwoul to downgrade to
44.07.33.32_NAC‑r0 but probably I need a file to add with license.
Anyone can give me any suggestions?

[mickthemaverick]

I think you have the numbers confused there, can you clarify the query? It may also be a better idea to post this query in the Audio and Telematics forum which you can find from the board index links under the main banner above.

[Glauco]

I apologise:
My car is a DS9.
When DS upgrade my system to 44.07.33.32_NAC‑r0
The lane assist and camera doesn't work. I would to downgrade to
PSA_ovip-int-firmware-version_44-07-05-22_NAC-r0_NAC_EUR_WAVE4 but probably I need a file to add with license.
Anyone can give me any suggestions?

[RichardW]

I'm not sure you can reverse the firm ware upgrade. Anyway, if DS broke it get them to fix it!

[Glauco]

Hi everyone,
I have a DS9 MY2021 with NAC Wave 4. After updating to 44.07.33.32_NAC-r0, some functions disappeared from the menu (Lane Assist, Night Vision).
I would like to perform a downgrade to 44.07.05.22_NAC-r0.

I already have the .tar firmware file, but I am missing the VIN license file.
My VIN is: VR1**************[VIN obfuscated, can be read by forum staff].

Could someone please help me generate the license for this version?
Thank you very much in advance!

[Paul-R]

This has already been answered as best we can Glauco,

[Glauco]

Hello Paul, is it not possible to dowload the 44.07.05.22_NAC-r0 with license somewhere? I'm not feel confortable to go back to DS, they already made to many demage and rhy not answer at all.

After only two years, I experienced issues with the doors not working properly. Unfortunately, despite the car being relatively new, Stellantis did not recognize the warranty, leaving me to cover the costs myself.

I find this situation very disappointing for a brand that presents itself as premium, especially given the price level and promises of quality.

[Paul-R]

It is not possible to simply downgrade the firmware in a unit. It would need a well equipped workshop able to dismantle a unit down to component level and able to read the chips directly. And they would have to know what they are doing.

I'm afraid I can't see any alternative to persevering with your DS dealer.

[Glauco]

Thanks, do you know if there is any future upgrade to fix this issues?

[Paul-R]

I have no knowledge either way. Forum member Rui Saraiva knows a lot about this system and has a link to his web site in his signature. Maybe there is something there that can help you.

viewtopic.php?p=844359#p844359

There is a long (very long!) thread here which may contain something relevant. Rui has posted in this thread many times.

viewtopic.php?t=81068

[Glauco]

thanks!