PSA NAC RCC Updates

[gcdec]

Hello, I had no problem a few months ago updating my maps to 20.0.0-r0. My car is wave 4, and has the most up to date firmware installed 44-07-33-32_NAC-r0. I saw there was a new map update 21.0.0-r0. I downloaded it. I formatted my 32gb sandisk usb stick to Fat32, and using 7zip sent files straight to usb stick. I am using windows 11. Went in my car and started it and turned off start stop, engine running, but every time I insert usb stick in car and press install on the screen a message comes up straight away saying map eur failed. Cant understand why as I have done exactly the same as I did with the map update 20.0.0-r0. If someone could help me get this problem sorted I would be so so grateful. @rui_saraiva

Can anyone confirm they have successfully installed map update 21.0.0-r0

[kazulbek_87]

@kazulbek_87:

The 44.06.44.22_NAC-r1 firmware version is exactly the same code as the 44.06.44.22_NAC-r0 version, but with a certificate valid until November 18, 2028 (just like the 44.07.33.32_NAC-r0). If you already have a 44.07.05.22_NAC-r0 or 44.07.33.32_NAC-r0 version, you can't install this "new" 44.06.44.22_NAC-r1.

License for the 44.07.33.32_NAC-r0 and your car:
https://majestic-web.mpsa.com/mjf00-web ... D4D964224A

Thank you for the answer and the license.
Currently, I have version 43.04.26.52 installed.
Today I will try to install version 44.07.33.32

I downloaded 44.07.33.32_NAC-r0 from the website, but the file size doesn't match.
The file I downloaded is 6 164 270 KB and 6 164 268 KB!!!

[rui_saraiva]

Code: Select all

> curl --head https://majestic-web.mpsa.com/nas/eu/mjb00/PSA/mjbsu/PSA_ovip-int-firmware-version_44-07-33-32_NAC-r0_NAC_EUR_WAVE4.tar
HTTP/1.1 200
Accept-Ranges: bytes
ETag: W/"6312212480-1768999041000"
Last-Modified: Wed, 21 Jan 2026 12:37:21 GMT
Content-Type: application/x-tar
Content-Length: 6312212480
Date: Thu, 15 Oct 2026 19:09:04 GMT
X-PSARP: pywb5c1
Set-Cookie: PSACountry=PT; Domain=.mpsa.com; Secure; Path=/

Content-Length: 6312212480
The "Size" in my table is still correct.

[kazulbek_87]

Code: Select all

> curl --head https://majestic-web.mpsa.com/nas/eu/mjb00/PSA/mjbsu/PSA_ovip-int-firmware-version_44-07-33-32_NAC-r0_NAC_EUR_WAVE4.tar
HTTP/1.1 200
Accept-Ranges: bytes
ETag: W/"6312212480-1768999041000"
Last-Modified: Wed, 21 Jan 2026 12:37:21 GMT
Content-Type: application/x-tar
Content-Length: 6312212480
Date: Thu, 15 Oct 2026 19:09:04 GMT
X-PSARP: pywb5c1
Set-Cookie: PSACountry=PT; Domain=.mpsa.com; Secure; Path=/

Content-Length: 6312212480
The "Size" in my table is still correct.

I can see that everything is correct in the table, but when I download it, the file is incomplete. I can't figure out why

[rui_saraiva]

The Citroën/DS/Opel/Peugeot/Vauxhall Update is offering again the 44.07.33.32_NAC-r0 firmware version for all the NAC_EUR_WAVE4 infotainment systems.
Unfortunately, that particular file - https://ds4emloty3shq.cloudfront.net/CO ... _WAVE4.tar - still has invalid signing certificates and is impossible to install (you'll see the generic "Version not compatible with hardware" error).

An older file, still hosted in the PSA server and linked from my page - https://majestic-web.mpsa.com/nas/eu/mj ... _WAVE4.tar - has valid signing certificates until 8 November 2026. Both files have 6 312 212 480 bytes, but only the latter is still possible to install.

At least, and until that 8 November 2026, if you want to install the latest firmware, you can use the official software to correctly prepare the USB flash drive (with a valid license for your car and for that firmware version), delete the "SWL" folder (keeping the "license" folder with the valid license), and extract the .tar file (*) linked from my age.

(*) Avoid WinZip (or disable the default "smart CR/LF conversion" setting) and just use a recent version of 7-Zip, that also supports PAX Headers, which is used in these files.

[gcdec]

Hello, I had no problem a few months ago updating my maps to 20.0.0-r0. My car is wave 4, and has the most up to date firmware installed 44-07-33-32_NAC-r0. I saw there was a new map update 21.0.0-r0. I downloaded it. I formatted my 32gb sandisk usb stick to Fat32, and using 7zip sent files straight to usb stick. I am using windows 11. Went in my car and started it and turned off start stop, engine running, but every time I insert usb stick in car and press install on the screen a message comes up straight away saying map eur failed. Cant understand why as I have done exactly the same as I did with the map update 20.0.0-r0. If someone could help me get this problem sorted I would be so so grateful. @rui_saraiva

Can anyone confirm they have successfully installed map update 21.0.0-r0

Is there anyone on here that can help me - the Sandisk 32gb usb stick was brand new and only used once to install map update version 20. But no matter what I do I cant get map update 21 installed.

[AlCalder]

Thank you Rui for your post PSA NAC RCC Updates 22 Oct 2026, 01:10 firmware update to 44.07.33.32_NAC-r0 firmware version for all the NAC_EUR_WAVE4

Perfect and thanks again

Al

[rui_saraiva]

Hello, I had no problem a few months ago updating my maps to 20.0.0-r0. My car is wave 4, and has the most up to date firmware installed 44-07-33-32_NAC-r0. I saw there was a new map update 21.0.0-r0. I downloaded it. I formatted my 32gb sandisk usb stick to Fat32, and using 7zip sent files straight to usb stick. I am using windows 11. Went in my car and started it and turned off start stop, engine running, but every time I insert usb stick in car and press install on the screen a message comes up straight away saying map eur failed. Cant understand why as I have done exactly the same as I did with the map update 20.0.0-r0. If someone could help me get this problem sorted I would be so so grateful. @rui_saraiva

Can anyone confirm they have successfully installed map update 21.0.0-r0

Is there anyone on here that can help me - the Sandisk 32gb usb stick was brand new and only used once to install map update version 20. But no matter what I do I cant get map update 21 installed.

You should first see a warning about no media files in the USB flash drive. That is expected (in fact, there aren't any audio or video files in the update) and you should just ignore that message. That also means the USB flash drive was correctly FAT32-formatted and the car could read its contents. A few seconds later you should see a message asking if you want to update the maps.
Any error after this message is usually related to:
- Update prepared in a macOS system that automatically writes extra system files to the USB flash drive. The update fails when computing the checksum of folders with those extra files (Not your case);
- The extraction utility doesn't support PaxHeaders (old versions of 7-Zip, for instance) and/or automatically convert text files (WinZip does that "smart CR/LF conversion" in its default settings);
- The USB flash drive itself might have bad flash memory. Also, many cheap drives are sold with an expected size, when, in fact, they only have a fraction of that space. File corruption occurs;