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BMW ECU
Flashing

Flash the Bosch BMS-O ECU in your S 1000 R, RR or XR, R 1250 GS or K 1600 through the diagnostic connector.

3Models
3Model years
1ECU families
Find your BMW See pricing
Supported models

Every BMW we can flash

Model years, the ECU inside and the interface it needs. Bench wiring diagrams for every model are in your MotoFlasher account.

Model Years ECU Interface
K 1600 GT / K 1600 GTL 2022-2024 (OBD) Bosch BMS-O TC1793 · 4 MB Add-on Tactrix OpenPort 2.0CANable
R 1200 GS LC / R 1250 GS 2019–2024 (OBD) Bosch BMS-O TC1793 · 4 MB Add-on Tactrix OpenPort 2.0CANable
S 1000 R/RR/XR 2020-2024 (OBD) Bosch BMS-O TC1793 · 4 MB Add-on Tactrix OpenPort 2.0CANable
Inside the bike

BMW ECU families

Which engine computer each model uses decides how it is read and written. MotoFlasher picks the right protocol for you.

Bosch Add-on

BMS-O

TC1793 · 4 MB

K 1600 GT / K 1600 GTL, R 1200 GS LC / R 1250 GS, S 1000 R/RR/XR

Tactrix OpenPort 2.0CANable
How it works

Flash your BMW in four steps

  1. 01

    Connect

    Plug your interface into the diagnostic port, or wire the ECU on the bench with the diagram from your account.

  2. 02

    Read & back up

    MotoFlasher identifies the ECU and reads the full flash. Keep that original file: it is your way back.

  3. 03

    Tune

    Edit fuel, ignition, limiters and the other maps in your tuning editor, or load a file from your tuner.

  4. 04

    Write

    MotoFlasher corrects the checksum and writes the file back. Start the bike and ride.

Why flash a BMW ECU?

BMW’s boxers, inline fours and sixes are refined machines with calibrations to match: conservative fuelling at small throttle openings, softer response than the engines are capable of and limits written for emission tests. A reflash lets you tune the bike for your exhaust and the way you ride.

BMW ECU family

The supported BMW models use the Bosch BMS-O ECU on an Infineon TC1793 processor, read and written over OBD through the diagnostic connector with a Tactrix OpenPort 2.0 or CANable:

  • S 1000 R, S 1000 RR and S 1000 XR (2020 to 2024).
  • R 1200 GS LC and R 1250 GS (2019 to 2024).
  • K 1600 GT and K 1600 GTL (2022 to 2024).

BMS-O support is an add-on where marked in the table above.

Flashing a BMW, step by step

  1. Keep the battery on a charger.
  2. Connect a Tactrix OpenPort 2.0 or CANable to the diagnostic connector.
  3. Read the ECU and save the original file.
  4. Edit the maps or load the file from your tuner.
  5. Write it back. MotoFlasher corrects the checksum.

Frequently asked questions

Is the BMW S 1000 RR supported?

Yes, the 2020 to 2024 S 1000 R, RR and XR with the Bosch BMS-O ECU, over OBD.

Is the R 1250 GS supported?

Yes, together with the R 1200 GS LC, from 2019 to 2024.

Which interface do I need for a BMW?

A Tactrix OpenPort 2.0 or a CANable.

Can I go back to the stock map?

Yes. MotoFlasher reads the full original file before writing anything, and you can write it back at any time.

Guides

Read more about flashing your BMW

The Complete Guide to Motorcycle ECU Reflash and Tuning If you’re looking to unlock your motorcycle’s true performance potential, understanding motorcycle ECU reflash technology is essential. Whether you’re a track enthusiast or simply want...
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Ready to flash your BMW?

One license, every supported model of the brand, free software updates and support from people who tune bikes.

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