PSA NAC RCC Updates

[diploma]

The "SWL/00*/Certificates/PSA-OVIP-CS-G1.crt" file is the public key certificate that is used to verify the identity and the authenticity of the software. To digitally sign the software, PSA/Stellantis used the other half of the equation - its PRIVATE key. You can download the latest public key from http://pki.p3cs.com/PSA-OVIP-CS-G1.crt but that's not the problem.
The software MUST be digitally signed with the private key that pairs with that certificate, and only PSA/Stellantis has access to that private key.

I obviously won't link to anything here, but I wanted to know:
The private keys have been published by a someone on GitHub for a few years now, corresponding to each version that was available.

Is there any chance that someone signs a firmware file using that private key - or are we missing something to get that final step done?
We have examples of license files, the .tar firmware files, and private keys available online.

I'm asking since it's unclear to me how how PSA does this on their end.

[rui_saraiva]

@diploma: The VLud's repository doesn't have the Code Signing (CS) key, that is used to sign the MediaHeader/MediaVersion.ini file.

[rui_saraiva]

Hello.

And use CarlinKit USB dongle work and resolve the certificate problem ?

The Carlinkit and the NAC's firmware signing key aren't related whatsoever...

Unless you're using a NAC Wave 1 or a very old NAC Wave 2 (with a 5.xx.xx.xx firmware version), you can still connect your phone to the infotainment system, with the carlinkit or just a USB cable, and use Apple CarPlay or Google Android Auto.

[rui_saraiva]

Thank you Rui for sharing information, I read a lot of your post during past few months in attempts to get latest OS and maps to my rifter. But I would ask again for your opinion - what if I disconnect NAC from everything but power source and make it forget current date and then try to update with freshly created USB using peugeot update app?

and one more question regarding hardware - today I discovered turbo (115 000 km, 130 bluehdi, garrett) on my rifter to whistle and throw oil. Looks like too early? What could be the reason?

Thanks in advance!

Regards,

Dmitri

To install any firmware version, you need the digital key (not related to the code signing certificate) that also has an expiration date. You can change the date of the infotainment system, but then the digital key is invalid...

[SterkeYerke]

Well, the dealership has now concluded that the NAC unit in our 508 is defective. Obviously it isn't, but apparently the only Peugeot approved way of upgrading a Wave 3 system to Wave 4 is now to replace the entire unit. Our car is still under warranty so we don't mind, but the fact that Peugeot prefer letting their customers pay €1100 for a new unit over just putting out a new certificate is disappointing to say the least.

[makap42]

A few days ago, my Citroën started recognizing my radio as NAC Wave 4. So today I decided to try updating it—and it worked! The update went through successfully, and everything seems to be functioning properly so far.

[pasiek78]

Hello, I'm new here. After a failed update from a USB drive downloaded from Peugeot Update, I have a blue screen. What's the best thing to do now?

[pasiek78]

I wanted to add that I tried the trick with just the map to reset the system, but after inserting the USB drive, the screen goes from blue to black for about 5-10 minutes, then returns to blue.
Which firmware version should I use, and where’s the best place to download it for my Peugeot 508? The version I wanted to install is 44.07.33.32_NAC-r0, but I can’t download it anymore because Peugeot Update thinks I already have it installed.
Here’s my VIN: VR3**************[VIN obfuscated, can be read by forum staff].
Please help!

[dudra92]

A few days ago, my Citroën started recognizing my radio as NAC Wave 4. So today I decided to try updating it—and it worked! The update went through successfully, and everything seems to be functioning properly so far.

Can you please give us step by step details. I'm in the same situation as you, but I still get "Version not compatible with hardware" issue.

[bugragnc]

@bugragnc: You have an RCC Wave 3 (RCC_EU_W3_ECO) infotainment system, the A1 (or A2) is just hardware capabilities, namely the "Mirror Screen" (Apple CarPlay, Google Android Auto or MirrorLink) support - the A1 version doesn't have that support. There are also RCC Wave 2 A1 and A2 versions, but those Ax aren't meaningful for the firmware version.

You can find all firmware versions for your RCC Wave 3 at https://sites.google.com/view/nac-rcc/system/rcc/wave-3 but you won't be able to install the older ones (probably older than 2023, I didn't check), they already have expired signing certificates.

Disconnect the 12V battery, insert the USB flash drive with the update prepared with the Peugeot Update software (with the 6_0431_23.2I41.1 version and the respective key/license) and reconnect the battery.

Hello everyone,

My issue is now solved. I just wanted to share the solution in case it helps others.

First, thanks to rui_saraiva for the quick reply.

I tried updating my 2019 Peugeot 301 with a 32GB USB — it didn’t work.
Then I used a 64GB USB formatted with Rufus (FAT32) — still no success.
Finally, I used an old 16GB SanDisk USB stick, and the update completed in about 20 minutes.

Thanks to everyone in the forum for the support.
Greetings from Turkey!

[makap42]

A few days ago, my Citroën started recognizing my radio as NAC Wave 4. So today I decided to try updating it—and it worked! The update went through successfully, and everything seems to be functioning properly so far.

Can you please give us step by step details. I'm in the same situation as you, but I still get "Version not compatible with hardware" issue.

Citroen Update recognizing my radio as NAC Wave 4 (site: https://sites.google.com/view/nac-rcc/system also recognizing my radio as NAC Wave 4), so i create USB drive (Pendrive PHILIPS Snow 32GB, USB 2.0) with update (44.07.33.32_NAC-r0) and i update system in my car. Thats it.

[pasiek78]

Did you have to change anything else in the files on the USB stick?
Did you download the system from that site and just copy it to the USB stick—without any activation key?
I’m getting a blue screen after a failed update, and I wanted to put the same firmware on a new USB stick like you did.

[morllow]

Hi, I have a wave 3 radio ver 31.09.46.62_NAC-r0 Without wifi I need a license key to update the radio.Could someone generate a key for me or tell me how to do it?
Vin: VR7**************[VIN obfuscated, can be read by forum staff] A45GFRKL074099

[makap42]

Did you have to change anything else in the files on the USB stick?
Did you download the system from that site and just copy it to the USB stick—without any activation key?
I’m getting a blue screen after a failed update, and I wanted to put the same firmware on a new USB stick like you did.

I didn’t modify any files. I created the flash drive using the Citroen Update app.
Check your VIN in site https://sites.google.com/view/nac-rcc/system. If recognize as Wave 4, update must go on.

[pasiek78]

My Peugeot Update thinks I’ve already completed the system update, so I can’t download the same firmware again…