For professional tuners
OBD-Locked MDG1 bootloader? Unlock it using bench connection.
MG1/MD1 ECUs received a bootloader update eliminating the OBD flashing possibility around 2019.07, so all MDG1-equipped vehicles which received a software update after this point requires to be unlocked via bench connection prior to OBD flashing of the modified firmware. 1769Flash offers automated bench unlock flow using ScanMatik SM2/3 interface, covering all DME8 ECU versions known to date.
How it works
Three simple steps.
Connect the ScanMatik to the DME
According to wiring diagram from Docs tab, using ScanMatik2/3 with a bench cable and a stable power supply.
Automated Unlock
Just two buttons, Connect+Unlock and you are all set for OBD flashing.
Flash OBD
Install the ECU back, the ECU is open for OBD flashing now, with OEM FSC retained.
What it changes
No 3rd party tools
The other way through a locked bootloader is a bench read produced by a third-party tool. 1769Flash still accepts one of those files — it just no longer needs one.
Automated Unlock Flow
We know how important and valuable your time is, so we made sure the unlocks are lightning fast. Connect+Unlock operation together takes under 30 seconds total.
Access to Flash/Eeprom
The same add-on allows reading and writing of full 8 MB PFlash with automatic checksum/CVN verification, and reading/writing of the 768 KB EEPROM/DFLASH — for backup and recovery, well beyond the unlock itself.
Retain OEM FSCs
Many tools on the market only patch away the firmware signature checks in the bootloader, forgetting about deeper patching needed in order to retain the OEM FSC feature codes. We got you covered, 1769Flash makes sure OEM FSCs are retained.
What is supported
The app reads the MCU type, the boot controller version and the ECU security version off the ECU when it connects, and proceeds only for a combination listed here. Bench unlock is separate from OBD support — it opens a locked bootloader so the DME accepts a tune over OBD afterwards.
IFX MCU
IFX (TC298), IFX (TC299)
ECUs: MD1CP032, MD1CS001, MG1CS024, MG1CS049, MG1CS201
| Version | BootCtrl | EcuSecu |
|---|---|---|
| pre-2020 | 04.00.01 | 03.00.02.05 |
| post-2020 | 04.00.03 | 03.00.03.05 |
JDP MCU
JDP (MPC5777)
ECUs: MD1CP002, MD1CS001, MG1CS003
| Version | BootCtrl | EcuSecu |
|---|---|---|
| pre-2020 | 03.00.08 | 01.00.06.15 |
| post-2020 | 03.00.81 | 01.07.00.15 |
Not sure which one your DME is? The supported hardware list shows the MCU per hardware number, and filters to bench-capable ECUs.
What it looks like
Connect/Backup
Read the ECU identification data, including the service boot version/SVT/ECU Type/Serial. Backup/Restore Flash/Eeprom.
Questions tuners ask
Which DMEs can be bench-unlocked?
Infineon-based MG1 and MD1 engine DMEs, both pre- and post-2020 variants: MG1CS024, MG1CS049 and MG1CS201 (TC298TP), and MD1CP032 (TC299TP). As well as JDP-based control units, both pre and post-2020 variants: MG1CS003, MD1CS001 and MD1CP002 (MPC5777M).
Do I still need a third-party bench read?
No. If you already have one, 1769Flash still accepts it — the unlock prompt keeps that option — but you no longer need a second tool to produce one.
What hardware do I need?
A ScanMatik 2/3 with the ScanMatik J2534 driver v2.22.2 or newer (older drivers are not supported), a bench harness for the DME, and a stable 12 V supply. ONLY ORIGINAL SCANMATIK INTERFACES ARE SUPPORTED. Please visit https://scanmatik.pro/ to purchase.
What does it cost?
€500 one-time, on top of the MDG1 protocol, for unlimited VINs. Bench is a tuner add-on — it is not part of a customer's single-VIN DME license.
Is the unlock permanent?
Yes, as long as bootloader isn't overwritten (via OBD update or recovery), ECU will stay unlocked.
Already tuning MDG1 with us?
Then you already have it — the unlock appears the next time you press Write on a locked DME. The full walkthrough, with the wiring diagram, lives in the Windows guide under Bench mode.