Retrofit MIB3

There are now two ways to retrofit an MIB 3 MQB system. So, not an MIB 3 EVO.

You can use the original 8" display, or you can install a 9.2" display somehow.

... I looked at both solutions...

I tested an 8" VW unit, part number 3G5035820M.

It's important to note that with TechnikSat/Preh/Joynext, the software version must not exceed 0332, otherwise the device cannot be patched. I have a USB solution for CP Off and all FeC Active.

For it to work, the online services must be deactivated via coding.

Then the coding needs to be adjusted.

I find the VW HMI simply awful. Therefore, VW is out of the running for me.

There are also 8" Seat or Skoda units.

Alternatively, there's the larger MIB 3 MQB with a 9.2" screen.

I used a Seat Ateca unit, part number

The Display Octavia 3 9,2" is 5E0919606D

The Ateca unit is from LG. Here I disabled CP and modified all FeCs with an EEPROM change. So, I created a dump, made the changes, and then wrote them back.

Caution: With SFD 1 units, all coding and adaptations must be done beforehand, before patching.

What else needs to be considered during the conversion, as the USB port will no longer function? This means the USB connection needs to be replaced.

I used the following components:

USB-C dual board, part number 5NA035736

The control method is now different; the new boards are powered by 5V from the MIB 3 and 12V from the vehicle's electrical system. The data line is also wired differently. Either modify the connectors on both ends of the cable (the MIB side needs to be plugged in rotated 90°) or buy an MIB 3 cable set:

2GD035736 Autoteile Dual Typ-C Schnittstelle Frontladestecker für VW ID6 Jetta 2019-2024T-Roc 2018-2024

https://a.aliexpress.com/_ExSqe7C

The journey to our holiday destination went without any problems; it was about 400km.

For people without a sound system, not much changes. In my Octavia 3 without a sound system, it can still be optimized with data sets, etc. However, if you have the internal sound system in your Seat, like me, you'll run into problems with the MIB3... the MIB3 only supports 8 channels, so my center speaker and subwoofer are non-functional. Existing sound systems in Skoda vehicles should be codingable in the MIB3 without any problems.

Edited 2 hours ago2 hr by Cairus