Diagnostic VDI, VNCI, MDI with MG4

Does anyone know how long the old SIPS will continue to function? MG has switched to a new system where you are given a code that you must send to MG and then receive an authorisation code in return. Only then can you update.
i have noticed that too. but how do do you get the code to send to mg, i have not found any instructions on that? or is it not possible at all?
 
@Mystralfire Please have a look at this thread and the other one about software updates. There is a PDF file that describes the process to get the code. I didn't download that file because it was not necessary for SIPS version from November 2024. In my understanding that way is only possible if you're a MG car dealer. But if I'm wrong please don't hesitate to correct me.

Edit: Here 👇
 

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Updating my control modules went smoothly today. After my mechanic assured me during the second inspection in December that the MG was now up to date, I updated six control modules with SIPS today.

I started with BMS and without a 12V charger. After just 10 minutes, the voltage had already dropped to 11.6V. Therefore, I decided to use the charger after completing the BMS update.

Many thanks for the post @haloweenhamster and the helpful comments on it. I have written a German guide here: [HOW-TO] MG4 Steuermodule mit SIPS und VNCI VDI3 updaten - MG4 Electric Forum
 
Not really. I'm glad that R67 fixed the BT issues
So you still have this problem after the initial start (after another refresh it will update)?
1000339768.webp
 
Updating my control modules went smoothly today. After my mechanic assured me during the second inspection in December that the MG was now up to date, I updated six control modules with SIPS today.

I started with BMS and without a 12V charger. After just 10 minutes, the voltage had already dropped to 11.6V. Therefore, I decided to use the charger after completing the BMS update.

Many thanks for the post @haloweenhamster and the helpful comments on it. I have written a German guide here: [HOW-TO] MG4 Steuermodule mit SIPS und VNCI VDI3 updaten - MG4 Electric Forum
Inspired by your guide, I've created a Romanian guide :). Thank you!
 
Inspired by your guide, I've created a Romanian guide :). Thank you!
Thx for your work! Your website is awesome. I’ve added your module list on my side as well.
 
If you encounter this error while installation it is an issue of .Net
Screenshot 2026-01-23 at 13.49.36.webp


The Solution: You have to enable it manually.
  1. Press the Windows key.
  2. Type "Turn Windows features on or off" and open it.
  3. Look at the very top for ".NET Framework 3.5 (includes .NET 2.0 and 3.0)".
  4. Check the boxes next to it.
  5. Click OK and let Windows download the files.
    Screenshot 2026-01-23 at 13.55.22.webp
    Screenshot 2026-01-23 at 13.55.40.webp
After that it worked flawlessly.
 
Question - if you're updating via USB, do you need a 12V booster/charger connected to the 12V battery, or is the car in READY mode such that the HV battery tops up the 12V battery? (The DOC guide in the OneDrive - which applies for the SE models - doesn't actually say ... unless EPT ready means READY state).

And the guide also says to repeat steps 1-4 of the MPU process when doing the MCU ... do you really need to restore to Factory Settings again?
 
You forgot one thing : AliExpress have severals prices according what you choose. The VNCI is on second picture (first one is MAXUS diag credentials). If you choose the right pic, wich price do you have ?
I tell you :
1769512898269.webp



EN Focus RO was right.
PS : took mine here : VNCI VDI3 Roewe MG Wuling Maxus Automotive Diagnostic Tool
 

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