MIB3 Downgrade possible? Green Menu?

[blackh0le]

Hallo all, I'm new to this whole community.

I was wondering if it is possible to downgrade a MIB3 Version?

In the Update Selection Screen the Options get a "D" when loading an older Firmware but noting happens.

Do you have to activate User Defined SWDL like on MIB2 to select the Options in the Update Selection Screen?

Thanks for any input!

 

[AINils]

First of all send an autoscan.

Second: Don't use public "patch", which is risky

 

[blackh0le]

That's what I told him too.

His MIB ( 5F ) has no fault and still works great after the Update.

Only the Dashboard ( 17 ) has a Fault now, "U105400 - Information electronics control module 1 No Communication"
But you can't recognize any problems while using it, only CarPlay Album Art won't update with Song change.

 

[Dr Sheldon]

First of all send an autoscan.

??

 

[blackh0le]

Autoscan with VCDS only end of week when friend brings car back. Can give you Scan from OBDeleven, what he could do by himself if this would help

Date: 2025-03-02 20:20:04

    VIN: TMBJR7NX5MY---
    Car: Skoda
    Year: 2021
    Body type: UNKNOWN
    Engine: DFYA  kW ( hp) l
    Mileage: 91304 km

---------------------------------------------------------------
Full scan
    Control Units: 35
    Fault count: 1
    Control Units:
        B7 Start System Interface
        System description: Kessy IOBOX
        Software number: 5WA959436C
        Software version: 0706
        Hardware number: 5WA959436C
        Hardware version: 070
        
        Faults:
            No trouble codes found

        8121 Burglary Protection Rear Right
        System description: Kessy RSAD
        Software number: 5WA962133B
        Software version: 0636
        Hardware number: 5WA962133B
        Hardware version: 070
        
        Faults:
            No trouble codes found

        01 Engine
        System description: R4 1.5l TFS
        Software number: 05E906012Q
        Software version: 1131
        Hardware number: 05E907309G
        Hardware version: H20
        
        Faults:
            No trouble codes found

        D6 LED Module Left
        System description: LED1L
        Software number: 992941572CD
        Software version: 9102
        Hardware number: 992941572C
        Hardware version: H08
        
        Faults:
            No trouble codes found

        811E Burglary Protection Front Left
        System description: Kessy RSAD
        Software number: 5WA962133B
        Software version: 0636
        Hardware number: 5WA962133B
        Hardware version: 070
        
        Faults:
            No trouble codes found

        2B Steering Column Lock
        System description: ELV-MQBB
        Software number: 2Q0905861B
        Software version: 0040
        Hardware number: 2Q0905861B
        Hardware version: H09
        
        Faults:
            No trouble codes found

        13 Adaptive Cruise Control
        System description: ACC Bosch MQB
        Software number: 5WA907572B
        Software version: 0395
        Hardware number: 5WA907572
        Hardware version: H20
        
        Faults:
            No trouble codes found

        03 Brakes
        System description: ESC
        Software number: 5WA614517BK
        Software version: 0131
        Hardware number: 5WA614517P
        Hardware version: H14
        
        Faults:
            No trouble codes found

        19 Gateway
        System description: GW2020 High
        Software number: 5WA907530J
        Software version: 7084
        Hardware number: 5WA907530C
        Hardware version: 752
        
        Faults:
            No trouble codes found

        A5 Driver Assistance
        System description: MQB MFK 3.0
        Software number: 5WA980653A
        Software version: 3129
        Hardware number: 5WA980653
        Hardware version: H07
        
        Faults:
            No trouble codes found

        15 Airbag
        System description: VW40Airbag
        Software number: 1EA959655CK
        Software version: 0166
        Hardware number: 1EA959655CK
        Hardware version: 009
        
        Faults:
            No trouble codes found

        CC Starter/Generator
        System description: iBSG4U_000
        Software number: 05E903018G
        Software version: 0224
        Hardware number: 05E903018G
        Hardware version: H16
        
        Faults:
            No trouble codes found

        52 Passenger Door
        System description: TSG BFS
        Software number: 5Q4959592H
        Software version: 0691
        Hardware number: 5Q4959592H
        Hardware version: 010
        
        Faults:
            No trouble codes found

        3C Lane Change Assistant Right
        System description: HRE_Master
        Software number: 2Q0907686E
        Software version: 0284
        Hardware number: 2Q0907686E
        Hardware version: H25
        
        Faults:
            No trouble codes found

        75 Telematics
        System description: OCU3HMQB37W
        Software number: 5WA035284F
        Software version: 0144
        Hardware number: 5WA035284C
        Hardware version: H12
        
        Faults:
            No trouble codes found

        D7 LED Module Right
        System description: LED1R
        Software number: 992941572CD
        Software version: 9102
        Hardware number: 992941572C
        Hardware version: H08
        
        Faults:
            No trouble codes found

        02 Transmission
        System description: GSG DQ200G2.1
        Software number: 0CW906556M
        Software version: 0562
        Hardware number: 0CW300051N
        Hardware version: H07
        
        Faults:
            No trouble codes found

        09 Central Electrics
        System description: BCM 37W BOSCH
        Software number: 5WA937086G
        Software version: 0161
        Hardware number: 5WA937086G
        Hardware version: 018
        
        Faults:
            No trouble codes found

        5F Multimedia
        System description: MU-O-ND-EU
        Software number: 5E3035816D
        Software version: 1985
        Hardware number: 5E3035816
        Hardware version: H56
        
        Faults:
            No trouble codes found

        8120 Burglary Protection Rear Left
        System description: Kessy RSAD
        Software number: 5WA962133B
        Software version: 0636
        Hardware number: 5WA962133B
        Hardware version: 070
        
        Faults:
            No trouble codes found

        42 Driver Door
        System description: TSG FS
        Software number: 5Q4959593H
        Software version: 0692
        Hardware number: 5Q4959593H
        Hardware version: 010
        
        Faults:
            No trouble codes found

        44 Steering Assistance
        System description: BASGEN1MQB37
        Software number: 5WA907144G
        Software version: 1040
        Hardware number: 5WA907144C
        Hardware version: 102
        
        Faults:
            No trouble codes found

        82 Head Up Display
        System description: HeadupDisplay
        Software number: 5E4919608
        Software version: 2107
        Hardware number: 5E4919608
        Hardware version: 016
        
        Faults:
            No trouble codes found

        23 Brake Boost
        System description: EBKV
        Software number: 5WA909059H
        Software version: 0112
        Hardware number: 3Q0909059A
        Hardware version: H06
        
        Faults:
            No trouble codes found

        76 Parking Assistant
        System description: PLA 12K Kanal
        Software number: 5WA919298A
        Software version: 0230
        Hardware number: 5WA919298
        Hardware version: H04
        
        Faults:
            No trouble codes found

        21 Battery Energy Module
        System description: BMS_48V_LiIon
        Software number: 5WA915107
        Software version: 0455
        Hardware number: 5WA915107
        Hardware version: H10
        
        Faults:
            No trouble codes found

        6C Rear View Camera
        System description: RV eCompact
        Software number: 5WA980556B
        Software version: 0254
        Hardware number: 5WA980556B
        Hardware version: H26
        
        Faults:
            No trouble codes found

        BC Rear Right Door
        System description: TSG HBFS
        Software number: 5Q4959595H
        Software version: 0691
        Hardware number: 5Q4959595H
        Hardware version: 007
        
        Faults:
            No trouble codes found

        811F Burglary Protection Front Right
        System description: Kessy RSAD
        Software number: 5WA962133B
        Software version: 0636
        Hardware number: 5WA962133B
        Hardware version: 070
        
        Faults:
            No trouble codes found

        C4 Drive Motor Converter
        System description: DCDC_GEN_2
        Software number: 5WA959663
        Software version: 0111
        Hardware number: 4K0959663
        Hardware version: H20
        
        Faults:
            No trouble codes found

        4B Multifunction Module
        System description: FCM2020 Low
        Software number: 5WA907338
        Software version: 1372
        Hardware number: 5WA907338
        Hardware version: 009
        
        Faults:
            No trouble codes found

        BB Rear Left Door
        System description: TSG HFS
        Software number: 5Q4959595H
        Software version: 0691
        Hardware number: 5Q4959595H
        Hardware version: 007
        
        Faults:
            No trouble codes found

        36 Driver Seat
        System description: MEM-FS
        Software number: 5WA959760H
        Software version: 0362
        Hardware number: 5WA959760H
        Hardware version: 009
        
        Faults:
            No trouble codes found

        08 Air Conditioning
        System description: Climatronic
        Software number: 5WA907727BB
        Software version: 0531
        Hardware number: 5WA907727AM
        Hardware version: H02
        
        Faults:
            No trouble codes found

        17 Dashboard
        System description: KOMBI
        Software number: 5E3920770A
        Software version: 3460
        Hardware number: 5E3920770A
        Hardware version: 202
        
        Faults:
                U105400 - Information electronics control module 1
            No Communication
                static
                    Priority - 6
                Malfunction frequency counter - 1
                Unlearning counter - 235
                km-Mileage - 91304 km
                date - 2025-03-01 21:47:07

 

[AINils]

Okay will wait until VCDS scan, maybe you can also provide adaption map of 5F and measuring value from 19

 

[smithjohnson]

Hallo all, I'm new to this whole community.

I was wondering if it is possible to downgrade a MIB3 Version?

In the Update Selection Screen the Options get a "D" when loading an older Firmware but noting happens.

Do you have to activate User Defined SWDL like on MIB2 to select the Options in the Update Selection Screen?

Thanks for any input!

Hey! Welcome to the community.

Yeah, on MIB3, downgrading is tricky usually, the system blocks older firmware to avoid issues. You might need to enable User Defined SWDL (like on MIB2) to force the downgrade, but be careful, as it can brick the unit if something goes wrong. Maybe check with VCDS or OBDeleven to see if there’s an option to unlock that!

 

[blackh0le]

Hey! Welcome to the community.

Yeah, on MIB3, downgrading is tricky usually, the system blocks older firmware to avoid issues. You might need to enable User Defined SWDL (like on MIB2) to force the downgrade, but be careful, as it can brick the unit if something goes wrong. Maybe check with VCDS or OBDeleven to see if there’s an option to unlock that!

So how can I do that

 

[downtime]

Don’t downgrade, you will most likely end up with bricked unit

 

[AINils]

So how can I do that

Nothing for public, you can send in and will do it. But there's no reason to do it.

 

[blackh0le]

The 1985 Update broke the Connection to the Virtual Cockpit for CarPlay and Phone functions ( so the U105400 in the Dashboard ). No Album Covers and Titels and Phone specific option.
So our idea was to roll back to 1941 the previous version, with no fault codes in the 17 Dashboard. Maybe it is just the „Ethernet_Switch“ component that is buggy in the 1985 release. Other people report same problem with 1985

 

[AINils]

Yes it is known in 1985, like a lot of other bugs. Wait fornext update which fix it. In MQBw it's not recommend to downgrade

 

[blackh0le]

Ok. But you really think VW makes another update for Gold, Octavia, Seat after now the Facelifts are released?
What are the other known Bugs?