Reflash a Bafang Mid-Drive BBS02/ BBSHD/ Ultra M610/620 with a preset config/ settings (.el) file
Help Desk Support
By proceeding with the following you are acknowledging that you are following these instructions carefully and in full. Biktrix is not liable for any changes being made resulting in corruption of the motor controller. Warranty may be void if you program your motor yourself. Check with a Biktrix technician before making undocumented changes to these settings.
On the Device Manager please check if the COM port is read/ allocated to the device.
If the Device Manager does not show the USB-Serial Part as above, please Download and Unzip the CH341SER.zip attachment and double-click on SETUP.EXE to complete the installation. If that doesn't work try another USB port.
Inside the extracted software folder Right Click on .exe and ‘Run as Administrator’
Once the application is launched you would get a screen with some information like this on the 'BASIC' Tab. Note that the Read and Write Buttons are not True (clickable).
Click the Connect Button and if the connection is established the Read & Write Buttons will become True
On the Basic Tab, Click on Read Flash Button and then you would get some new values listed, Click the Read Flash Button again (as a safety)
The default Basic Tab on Swift should show this screen:
----------------------------------- Very Important Step ----------------------------------------
Click on File and then Click on Save as shown below;
Now give a name to your file as shown below, and enter the .el extension in the end, for example enter the name like this including the .el extension; Original_Settings_BikeFS.el
Also, note where this file is saved on the computer (take a screenshot/ picture from your cell phone of this screen)
Go to the saved file destination folder and confirm if the settings have been saved or not.
To Reflash/Upload with an existing settings file, Click on File-->Load
Locate the downloaded .el file in the file explorer that opens. You would need to double-click the folders to enter them and double-click the file name till it is visible under the 'Directory Name' as shown below. Please note that the file should have the .el extension and the file is the correct one for your bike. DO NOT flash your controller with the wrong file.
Click on the 'Load' Button and you will notice the values change in the settings fields.
Click on the 'Write Flash' button on the main screen and all the values would be entered on all the tabs. You would get a Pop-up message Write Flash Successful if you have done the steps correctly.
Please DO NOT MODIFY ANY OTHER VALUE UNLESS INSTRUCTED BY BIKTRIX
Click the Close button and exit the application.
Disconnect the USB cable and very very carefully pull the Programming cable out of the Umbilical plug, be patient take your time.
DO NOT PULL FROM THE WIRES, PLUGS CAN FORM PARTIAL VACUUM AND CAN THEREFORE GET ‘LOCKED’, USE A CLOTH PIECE IF HANDS GET SLIPPERY OVER THE PLUG WHILE PULLING THEM OFF, DO NOT PRY USING A SHARP TOOL, BE PATIENT. Stop and retry if it doesn't come off in one go.