Cannot update C4 2021 firmware with Citroen Update application

[citroen-enjoyer]

Hello there!

I am sorry in advance if this is a wrong place to ask, as it might be a completely Citroen-side problem, but I have already tried updating in a dealership in my country (eastern Europe) and they were unable to do so but they say that the update exists.

I have been trying to update the firmware and navigation in my car, but for some reason both 'Citroen Update' app and psa-update CLI (https://github.com/zeld/psa-update) fail to find any update for my VIN.

It seems like Citroen Update is unable to find anything for any of 5 different C4 2021+ cars I tested, but easily finds the update for a random C3.

Here is what I have pulled from a car:

Code: Select all

Package: ovip-int-firmware-version
Version: 42.03.31.32_NAC-r0
Status: install user installed
Architecture: armv7a
Installed-Time: 579

Package: map-eur
Version: 9.0.0-r0
Status: install ok half-installed
Architecture: armv7a

Does anybody know the way to fix that? It has an impact on a lot of new C4s. Can't say if all of them or only the ones tested.

[GiveMeABreak]

For NAC Wave 4 systems:

44.06.44.22_NAC-r0 is the latest available Firmware (released about Dec 2022).
14.0.0-r0 is the latest mapping version.

Have you tried to update the files manually (one by one) by downloading the individual files. The combined updates can sometimes be troublesome.

[citroen-enjoyer]

Hey Marc,

Thank you for your reply. I did not try that yet.
Using Citroen Update tool is kind of how it should work, right?
So I sent requests to the developers at https://developer.groupe-psa.com/inc/ and https://developer.groupe-psa.io/.
This issue affects all C4s I tried.

I can download 44.06.44.22_NAC-r0 pretty easily along with private key, thanks to this repo https://github.com/ludwig-v/psa-nac-fir ... ngineering,
but maybe you could point me in a direction where I can get maps and what additional files are needed for them?
For firmware as well, if there is a better place.

I will definitely do so if the proper way fails.

[GiveMeABreak]

I'll send you the links in a private message.

[citroen-enjoyer]

Thank you for your help!

I have updated both firmware and cartography using the links you sent. Still wish that Citroen Update would work though.

I think we can consider the matter closed.

[GiveMeABreak]

No problem.

[Amradelshahin]

Hello
I have a new C4 2023 and i can't update my firmware using the Citroen update application
Is there any other solution to update?

[GiveMeABreak]

Check the Citroen Update Application - they may have just updated it.