In order to write to BMW ECU's you first need to read the ECU part number using the
Woolich Racing Tuned (WRT) software. The ECU part number for these BMW models is NOT written on the outside of the ECU case or label, which is why we need to read it with the software.
In order to read the ECU Part Number and Serial Number you will first need a Bin File Key for this model, allowing you work with this ECU in the WRT software. If you do not have a Bin File Key already, you will need to purchase or allocate a key for the same model in the software from your Account page (
Customer Login).
**NOTE: Before you allocate a Bin File Key please check the build date of the bike/ECU, as most BMWs built after June 2021 are not currently supported and are still in development. The label on the outside of the BMW ECUs shows the manufacture date as shown below:
Once you have a Bin File key then you need to download the key and the new definitions to your computer running the WRT software as shown in the screenshots below.
In the WRT software menu first select 'Account' > 'Download Bin File Definitions' and wait for the process to finish, then select 'Account' > 'Download Keys' and allow the process to complete.
The Bin File Definition and Bin File Key will then be available to you in the software, and you can open one of the part numbers for this model in the software as shown below.
- In the Main WRT screen click on the 'New' button
Select your bike Manufacturer/Model/Year and click the New button as shown below. You can select any of the ECU part numbers, as long as the Manufacturer/Model/Year are correct as we are going to read the correct ECU Part Number at the end of this process.
Click the 'New' button to open this Bin File.
Select Tools > Read ECU Part Number and Serial Number as shown below
The software will read a small part of the ECU to identify the Bin File in the ECU.
If it is not yet supported in the software, the software will ask you to read out the full ECU, and send the bin file to us via the software. Follow the prompts to read the full ECU, and then fill out the form with the ticket number and send it in.
You should also create a ticket to let us know that you have sent us a bin file for addition into the WR software.
If it is supported, you will be asked if you want to open a new bin file, click yes.
For the BMW's you can only write to the ECU with the same file that you read out of it. You must READ ECU and follow the prompts to read out the ECU and save the readout file.
Once the read is finished click 'File' > 'Save', and save the file as your MASTER BACKUP file.
Then click Save again, and save it as your TUNING file.
You must only use this saved Tuning file for tuning/setting changes, and writing back to the ECU.
Ideally, you should save a new copy of the tuning file each time you flash to the ECU, so you can always go back a step if needed.
These Support Center articles may also be of interest to you: