DUDU7 LATEST MCU FIRMWARE.

surfer63

Mikescotland
The one from dudu_meng many posts above in this thread.
https://drive.google.com/open?id=1cW55TPYC9NhSTNWbSk0HiN9wfoRCDDe_&usp=drive_fs

Note though that we are talking about MCU firmware AND a separate BT firmware upgrade.

surfer63

Bettman66 OTA Update

And it starts all over again.
Although not really necessary, I used OTA upgrade-> other upgrade, and downloaded the new BT firmware 20250807 and tapped "Start update". It tells me not to use the unit and finishes after 1-2 minutes. But no BT firmware upgrade. The version is still the same. I rebooted and did it all over again. Still no BT firmware upgrade installed.

@DUDU-Meng : Can you please check if the OTA upgrade is broken in version 250812?
Everything I did via OTA upgrade on 250812 is failing.

Bettman66

surfer63
the OTA app version on both radios is 1.001118, but it may be different for you.

edit:

surfer63

My version is also 1.001118, but it still could be some underlying reason

gismo

DUDU-Meng ok so I've done the MCU update as well now and it just seems a bit hit and miss frankly:

I've only used this method:

Download the 7z linked above, directly onto the internal memory of the device
Unpacked the archive onto the device.
Used OTA-App/Other/MCU update (old status 2023) to select .bin and start update.
On first try, the unit rebooted directly and I was greeted by the old MCU version, so not successful.
I just tried the same again (no new download or unpacking, so same file) and this second time it needed a bit more time between hitting start and doing the reboot. This time the update was successful...

So the issue seems to be the updater. I didn't get any error messages (first try), nor progress nor success messages (second try).

Canbus/SWC was a bit shaky after the update. Worked after another reboot. Guess a reset would be good but had no pin in the car...

Edit: Version info added

Prior to updating

After updating (also updated BT firmware OTA, no issues there)

surfer63

It is getting stranger and stranger. I wanted to do another try at the Bluetooth firmware.
This is what the MCU firmware screen tells me (and now with proper screenshots from the unit)

Then I go to the Bluetooth upgrade screen and I see this.

Previously it mentioned the Bluetooth version. Now it mentions "unknown MCU firmware Version".

@DUDU-Meng : I really consider this a serious bug and another indication that the OTA updater is buggy.
From the screenshots you see my MCU version being 2025-07-15. My current Bluetooth version is 2025-07-05 (although not mentioned anymore) and my OTA update binary is version 1.001118.

DUDU-Meng

surfer63 You can try again. The server's Bluetooth firmware has now been updated to 250819.

surfer63

DUDU-Meng

I first updated my normal firmware to 250820 (other users: this is beta, not generally available).
My MCU firmware is still at the latest 2025.07.15
Then I updated my BT firmware to 2025-08-19. This was succesful. As far as I can remember, I now got for the first time a progress with increasing percentage. Before I only saw "Do not use your unit while firmware upgrade is taking place", or something like that. And sometimes I did not see this at all.

Anyway, currently the OTA updater functioned and I am now on the latest MCU and BT firmware and so far it functions fine.

Slavus

surfer63 What is normal firmware 250820? Is this MCU version? Where can i find it?

surfer63

Slavus What is normal firmware 250820? Is this MCU version? Where can i find it?

Normal firmware is what FYT and Dudu and all resellers call firmware, which is a new version of the software being the kernel and applications for your unit.
That is different from the MCU, Bluetooth and CANbus firmware.
See below from the default OTA-updater screen.

The soft-button "Other update" leads you to the MCU, Bluetooth and CANbus firmware upgrades.

Slavus

surfer63 ok, thx. Where can i find this version to download?

surfer63

Slavus
Like I mentioned in my post "I first updated my normal firmware to 250820 (other users: this is beta, not generally available)."
The current stable version (official as DuDu calls it) is the 20250729.
Normally I would not mention the beta version but after the several issues and fails with the OTA updater, I wanted to be as complete as possible.

You can become a beta tester: This FAQ, bullet #1. https://forum.dudu-auto.com/d/110-faqcasto-zadavaemye-voprosy
I do not know if this is still open. Use the translate functionality.

Slavus

surfer63 ok, i understand now. I have exactly the same problem with OTA updater when i try to update BT via OTA. After couple of times it updates, but the updater is buggy indeed

surfer63

Slavus
It is now also addressed in the Telegram group. Hopefully DuDu will pick up soon.

Btc3111

DUDU-Meng

Hello, Do you have the older 2024 stm32ud.bin MCU file?

I installed the new stm32ud.bin 20250715 MCU version from the 2024 version I previously had on my DUDU7 and it disabled my chassis's hardware buttons. Once I reselected the Raise CANBUS, 2 of the 6 buttons became functional and hard coded to "Back" and "Radio" functions with the others becoming inoperatable and no longer able to remap per the "MCU Panel Mapping" App. It sounds like the new MCU only reads the buttons as preconfigured options per the CANBUS now instead reprogrammable keys.

Janebo

Btc3111 Hi, I experiencing the same problems as you with the hardware button as you, didn't work and could not configure the button with the MCU key app, I solved it by flash the previous MCU firmware, lucky that I saved my MCU files for the other MCU,

DUDU-Meng

Btc3111
There is an older version that you can try.

7870-mcu-20250307.7z

853kB

Slavus

Does anyone have a file with the 2024.01.24 MCU version? Or another one from 2024?

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