DUDU7 LATEST MCU FIRMWARE.

trap63

Hello which is the latest available MCU FW for DUDU7 ? Is there a download link?

reg66

trap63
You may be better describing what issues you're having 1st. I'm not sure the MCU would require updating if there's no major issue. I'm also not sure, without a good reason, how forthright Dudu staff will be giving out an update - unless absolutely required.

But that's just my thoughts as a user...

DUDU-Meng

reg66
Yes, that's right.

trap63

reg66 Maybe after this update ? any other? https://drive.google.com/drive/folders/1QHfKsoY7tsgg4Bls8ezOjKWCTBwZ5NNy

acvdmolen

DUDU-Meng can you give me the latest MCU version because I updated my unit to the latest Bluetooth and overall version and get problems with phone and audio connections.
The MCU version is from 2023 maybe that could fix the issues?

reg66

trap63
You still haven't let dudu staff know what issue you're having

mlab

Dear friends hi,

I also looking if there is a new MCU update file available as my unit has a 2024 one installed.

No issues in software so far.

MihaiFlorin

mlab Updating MCU may brick your device. Do you reallyally want that? If you have no issues stay with the 2024 one. @trap63

trap63

MihaiFlorin If correctly updated with no peripherals power on and none apk running and w/o power interruption is a sure operation like updating laptop mainboards or routers board.

mlab

MihaiFlorin

hello friend..

Thanks for the information. It is really a simple operation ..

acvdmolen

After the OTA bluetooth update my unit says under Bluetooth "unknown MCU version" now I can,t connect anymore 🥴🫣🫣

DUDU-Meng

acvdmolen MCU cannot be flashed randomly, you need to know your MCU chip model.
However, you did not provide it

acvdmolen

DUDU-Meng MCU: 23.12.06 18:33:40 DUDUAUTO_53_7870_N32P48F64_3G__E60_V:1.0

Regards,
Arjen

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.

acvdmolen

acvdmolen is this the right information?

surfer63

acvdmolen
You ask that to yourself?

Anyway: The MCU embedded software is very specific software. It is not as simple as other software.
It integrates the Android layer with the hardware normally not in Android, like the car itself, the canbus, FM-chip, etcetera.
You can't compare that to a PC where the UEFI (previously BIOS) was only responsible for the starting up and checking the basic hardware and then start the OS. Everything else is driver based. Android works different. And in these units the MCU does much more than the UEFI.

On the other hand: As there is only one DUDU7 model (and Dudu6 and 4/5), without differences, it should be fairly simple for FYT to do an upgrade of the MCU firmware.

But why upgrade? You upgrade because there is a bug and something not working.
In "software land" there are apps that are very stable and have not been updated for years. If that is the case for the MCU firmware, there is simply no reason to upgrade.

@acvdmolen : What issues did you have with your Bluetooth. It clearly says NOT to upgrade if you do not experience issues.
And for that Bluetooth firmware update: There is a down-grade which has nothing to do with the central MCU firmware. @DUDU-Meng already shared it in another post.

acvdmolen

surfer63 the unit itself comes with the OTA updates. So I did nothing myself except the 3.6E early update.

surfer63

The OTA update is the "standard" update and can always be updated, bug-free or not.
Bluetooth and MCU (not available) go via "other software" and are never automatically installed. Especially because of that warning "do not install if you do not experience issues" (or something like that).

Did you only install the latest standard firmware? And really the latest? A couple of days ago I had to do 3 in a row, maybe due to small bug fixes.
And if you only did the standard firmware, you might need to do the BT-upgrade via "other software" as well.
Or wait for Monday when Dudu is available again.

acvdmolen

I get the question to update Bluetooth else I could not update to the latest version , so you are wrong about that. I never update without a reason.

DUDU-Meng

If there are no issues, it is not recommended to update the MCU.
Below is the latest MCU version for DUDU7 as of 20250715.
https://drive.google.com/open?id=1cW55TPYC9NhSTNWbSk0HiN9wfoRCDDe_&usp=drive_fs

acvdmolen

DUDU-Meng thanks

reg66

DUDU-Meng
@DUDU-Meng Just in case anyone needs to, now or in the future, can they downgrade MCU if the updated version is worse or causes different issues?

As in, try the updated MCU and if needed reflash the original MCU file...

Cheers

acvdmolen

DUDU-Meng thank you very much, everything is working well I only had to select the correct canbus module for my car. The system is workinkink quicker and better then ever.

surfer63

DUDU-Meng Below is the latest MCU version for DUDU7 as of 20250715.
https://drive.google.com/open?id=1cW55TPYC9NhSTNWbSk0HiN9wfoRCDDe_&usp=drive_fs

I decided to check my luck and to update my MCU.
My current MCU firmware is 2023.12.06 18:33:40 LSDD_53_L7870_N32P48F64_3G_60_V:10

So I downloaded above 20250715 MCU firmware and put the Stm32ud.bin onto a USB-stick and use the OTA-update with "other firmware" -> "MCU firmware" and browsed to the Stm32ud.bin on my USB-stick and started the upgrade. It rebooted my unit, but after checking the version is still mentions the 2023.12.06 MCU version.

I downloaded it again and did a CRC32 and sha256sum check. Both files were identical.

Then I copied the Stm32ud.bin from my server directly to the internal memory of my unit and did the OTA-update again via "other firmware" -> "MCU firmware" and browsed to the Stm32ud.bin again and started it. Again my unit rebooted but after reboot and checking, the MCU firmware was still the 2023.12.06.

Then I copied both the Stm32ud.bin and lsec6318update onto a clean usb-stick and tried to do the upgrade like this. It did find the new firmware, and again a reboot but after reboot I still have the 20213.12.06 MCU firmware.

When I check the Stm32bin with a hex editor I do indeed find
2025.07.15 14:03:02 LSDD_53_L7870_N32P48F64_3G_E60_V:1.0........<Date>Jul 15 2025<Time>14:00:53
So it seems the correct Stm32ud.bin for my unit as it has the identical signature as my original MCU firmware.

What is going wrong here?