PSA NAC RCC Updates
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rui_saraiva
- Posts: 88
- Joined: 15 Feb 2023, 10:31
- x 46
Re: PSA NAC RCC Updates
@Hank_Marvin: As I wrote, you cannot update the firmware. The system that generates/verifies the license keys, needed to install any firmware, is the same that identifies your car as NAC_EUR_WAVE3 - it fails immediately when you try to generate/verify a license for a NAC_EUR_WAVE4 firmware.
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Hank_Marvin
- Posts: 5
- Joined: 08 Feb 2026, 20:45
Re: PSA NAC RCC Updates
Oh I see, so just a waiting game for Stalantis/Citroen to fix it?
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Roger971
- Posts: 3
- Joined: Yesterday, 13:37
Re: PSA NAC RCC Updates
Good morning,
Excuse my English. For a few days now, the My Citroen app has been notifying me that a new update (44-07-33-42) has been released for the NAC on my Citroen C4 Cactus (2018), after a long delay.
Once downloaded to the USB drive, the car's USB doesn't recognize it. No message is displayed.
I hope you can give me some suggestions. Thanks.
Excuse my English. For a few days now, the My Citroen app has been notifying me that a new update (44-07-33-42) has been released for the NAC on my Citroen C4 Cactus (2018), after a long delay.
Once downloaded to the USB drive, the car's USB doesn't recognize it. No message is displayed.
I hope you can give me some suggestions. Thanks.
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rui_saraiva
- Posts: 88
- Joined: 15 Feb 2023, 10:31
- x 46
Re: PSA NAC RCC Updates
@Roger971: From the screenshot it's the firmware version 42.03.33.42_NAC-r0, the one that converts NAC_EUR_WAVE3 to NAC_EUR_WAVE4 - so you have/had a NAC_EUR_WAVE3 from the factory. What is your current firmware version?
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Roger971
- Posts: 3
- Joined: Yesterday, 13:37
Re: PSA NAC RCC Updates
this one, thanks for the replyrui_saraiva wrote: Yesterday, 15:44 @Roger971: From the screenshot it's the firmware version 42.03.33.42_NAC-r0, the one that converts NAC_EUR_WAVE3 to NAC_EUR_WAVE4 - so you have/had a NAC_EUR_WAVE3 from the factory. What is your current firmware version?
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rui_saraiva
- Posts: 88
- Joined: 15 Feb 2023, 10:31
- x 46
Re: PSA NAC RCC Updates
@Roger971: You already have the latest firmware version, ignore Citroën Update.
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Roger971
- Posts: 3
- Joined: Yesterday, 13:37
Re: PSA NAC RCC Updates
I thought so, thanksrui_saraiva wrote: Yesterday, 16:16 @Roger971: You already have the latest firmware version, ignore Citroën Update.