PSA NAC RCC Updates

[xgrey]

Hi,

I bought a C4 Cactus.
It comes with software version 31.09.46.62_NAC-r0.
I downloaded the Citroen update app and it confirmed that I could download software version 42.03.33.42_NAC-r0 and the latest maps.
A total of over 23GB.
The app downloaded everything and then prepared a flash drive.
However, a message appears in the car "Version not compatible with the hardware"
I contacted the Citroen helpline, and they sent me links to the software so I could manually upload it to the flash drive, but that didn't help either.
Any suggestions?

[Paul-R]

I don't know very much about NAC/RCC systems except that, mostly, the answer lies with Stellantis to issue some new up-to-date licences. They don't move very fast and, frankly, if not enough people complain through their dealers then it won't get done.

Forum member @rui_saraiva knows a lot about these systems and can sometimes help if he sees the query.

[poca]

Hi,

I do own a C5 Aircross 2020 and have tried to update to 44.07.33.32_NAC-r0 firmware and it has bricked the thing. It came with 42.03.33.42_NAC-r0 firmware.

My VIN is VR7**************[VIN obfuscated, can be read by forum staff]

Is there a simple way to rollback the firmware? I'm currently downloading the original version in order to try it.


Kind regards.

[Paul-R]

As far as I know it's not possible to roll back a firmware update easily. It's the sort of thing that would need a reasonably well equipped electronic workshop specialising in this sort of thing.

[poca]

As far as I know it's not possible to roll back a firmware update easily. It's the sort of thing that would need a reasonably well equipped electronic workshop specialising in this sort of thing.

I thought so lol

They never make it easy to do anything.

Anyways, I've tried another usb stick and couldn't get it to work, I believe that I'm either missing a license file or just completely out of luck unfortunately.

I've tried to load the new maps and see if that worked...the touchscreen just keeps rebooting forever now.

[_joan_inha]

Hi,

I bought a C4 Cactus.
It comes with software version 31.09.46.62_NAC-r0.
I downloaded the Citroen update app and it confirmed that I could download software version 42.03.33.42_NAC-r0 and the latest maps.
A total of over 23GB.
The app downloaded everything and then prepared a flash drive.
However, a message appears in the car "Version not compatible with the hardware"
I contacted the Citroen helpline, and they sent me links to the software so I could manually upload it to the flash drive, but that didn't help either.
Any suggestions?

Hello from Germany,
same problem here!
We also just bought a C4 Cactus with the software version 31.09.46.62_NAC-r0. We own a C3 Aircross as well, so we know how to do the updates in general and it always worked.
Can anyone help please?

[pav40]

Can anyone help me with a license file?

I've bought myself a Citroen C5 Aircross (2019) . I want to update my NAC. My curent version is 31.09.46.62_NAC-r0

Found the download file 43.03.33.42_NAC-r0 , but read that I need a personalized license too. Can you help me with that? VIN of my car is VR7**************[VIN obfuscated, can be read by forum staff]
Thank you in advance!

[thoun]

put your vin here : https://sites.google.com/view/nac-rcc/system

if the answer is wave 3 , it is no possible for the moment.
if the answer is wave 4 , you can obtain a license at https://majestic-web.mpsa.com/mjf00-web ... UUUUUUUUUU
only remplace UUUUUUUUUUUUUUUU with the UIN of your NAC

[Glauco]

my car has VIN VR1**************[VIN obfuscated, can be read by forum staff] If you could post link to file and licence file OF 44.07.05.22_NAC-r0

THANKS

[Cit fan 151]

We have 2022 C5 Aircross Sport and the 'Radio Settings' menu item is greyed out. Any reason for this? Would like to turn on RDS

[Glauco]

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!

[Luka19]

I have a 2019 C5 Aircross (VIN: VR7**************[VIN obfuscated, can be read by forum staff]). I tried to download the update via the Citroën Update application. It offers me maps version 17, but not a firmware update. The maps won’t install and an error appears. My current firmware is 31.09.46.62_NAC-r0. When I enter my VIN on the link https://sites.google.com/view/nac-rcc/system, it shows NAC_EUR_WAVE4. I downloaded all the available versions, but none of them will install. Could you please confirm if I need a license file for the update, or if it is enough to simply connect the car to the internet via my phone’s Wi-Fi?

[thoun]

Hello,

"My current firmware is 31.09.46.62_NAC-r0. When I enter my VIN on the link https://sites.google.com/view/nac-rcc/system, it shows NAC_EUR_WAVE4. "

This is probably a good news for you.

It seems possible to update directly with the firmware
version_44-07-33-32_NAC-r0_NAC_EUR_WAVE4.tar

However, I think that this will only work if you have the license corresponding to this version and the IUN for your vehicle.


Try to get it with this command: https://majestic-web.mpsa.com/mjf00-web ... UUUUUUUUUU

UUUUUUUUUUUUUUUUU is the l'UIN of your NAC

[alioneyy]

I need a license file. I am unable to perform the update. of version_44-07-33-32_NAC-r0_NAC_EUR_WAVE4
My vehicle’s VIN code is: VR1**************[VIN obfuscated, can be read by forum staff]

Please provide support.

Thank you.

[dynastymasra]

Hello, I am from Japan

I followed this step [Updating NAC or RCC Firmware, Maps, Licences][viewtopic.php?t=81259]
This is my system version

version

version

But I got this error

error

I tried with 3 different flash drives, still have the same error message.

VIN: VF7**************[VIN obfuscated, can be read by forum staff]