Protocol One Engineering

NOW AVAILABLE — Mercedes-Benz MRD1 ECU Unlock 🔓

We can now fully unlock the MRD1 (Bosch MD1CP001) ECU on the OM654 (2.0L diesel) and OM656 (3.0L straight-six diesel), 2020 onward.
The unlock is the mandatory first step before any real ECU tuning — and with us it comes the right way:

✅ Full, permanent unlock

✅ Unlocked for life — free re-unlock if a dealer update re-locks it

✅ Remote re-unlock in most cases

✅ Australian-based, no overseas shipping
Got a 2020+ Mercedes diesel? DM to book.

2025 G80 LCI

Unlocked locally in Sydney.
No downtime, no shipping, no nonsense.

Full access ready for:
• BM3 (incl. CustomROM)
• MHD / MHD+ (incl. CustomROM)
• ECU TEK (incl. CustomROM)
• Flex Fuel & PI integration

In and out same day — 30–60 minutes.

We don’t post enough of what we do… so here’s one done properly.

Customer came in for a full ECU unlock at our Melbourne location, we set him up with BM3 OTS and XHP to complete the package.

Paired with a race downpipe installed by , this B58 is now performing how it should have from factory.

Same-day unlock. No cloning. No downtime.

DM us or call to get yours sorted.

Introducing Protocol One Engineering.

Australian-developed ECU solutions for late-model BMW, MINI and Mercedes-Benz platforms — engineered for next-generation Bosch MG1 / MD1 control units.

All solutions are designed to retain factory ECU integrity, with no cloning, no PCB modification and no intrusive processes.

Our Mercedes-Benz solution has been developed in collaboration with Chyorny Blok, a specialist engineering group focused on next-generation ECU security systems, delivering a controlled and reliable approach for MD1 / MG1 platforms.

No overseas shipping.
No third-party handling.
No unnecessary downtime.

All services are completed locally at approved facilities, delivering consistent, same-day ECU access for supported vehicles.

Supported platforms include MHD, MHD+, BM3, MG Flasher and leading flash tools, with full support for advanced setups including flex fuel and CAN-based integrations.

Available for both individual owners and trade workshops seeking a reliable, repeatable solution.

📍 National service network across Australia
📧 Bookings & enquiries: [email protected]