52V Programming for BBS02 – Biktrix

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.

Here is a video about connecting the bike to a computer

Here is a video outlining the programming procedure

Applicable to Stunner, Stunner X, Juggernaut Classic models.

The following is the firmware update procedure to fix ERR07:

Step 1: Get a USB programming cable. One like this:

https://www.biktrix.com/products/bbs02-bbshd-programming-cable

Step 2: Download STC-ISP-15xx-v6.83.exe application software attached to this article below.

Step 3: Download the CRR1094824E010015.3_170815.hex file attached with this article below.

Step 4: Plug USB into the computer and the other end into the motor wiring harness (where the display plugs in) For detailed instruction see the video here -

https://drive.google.com/file/d/1-wRJ95xA6Nd7gzc1djEG9xyYrpc8lcmw/view?usp=sharing

Make sure that the 52V battery is connected to the bike.

Step 5: Right Click and Open the STC application as an Administrator:

Step 6:

Ensure this MCU on the program window

Also, ensure these;

Select the correct COM port
Set Max Baud 57600
Set Input IRC frequency to 18.432MHz
Click "Check MCU"

Disconnect & Reconnect the battery and the left bottom section should update to this message:

If you get an error, check COM port and repeat step 4-6

Step 7: Click Open Code File

Step 8: Load the CRR1094824E010015.3_170815.hex file that you downloaded

Step 9: Click Download/Program

It will load the new firmware. If the status window on the bottom left is stuck at "Checking target MCU" like below, disconnect the 52V battery and reconnect to motor.