Note: If you do not have a program to open .ZIP files on your computer visit the WinRAR website and download + install the following program.
The following is the firmware update procedure to fix ERR07:
Step 1: Get a USB programming cable. One like this:
Step 2: Download STC-ISP-15xx-v6.86D.rar software
Step 3: Download CRRxxxxxx.bin
Step 4: Plug USB into computer and the other end into the motor wiring harness (where the display plugs in)
Make sure the BBSHD motor is connected to your 52V battery
Step 5: Unzip (Unrar) STC-ISP and open this file as an Administrator:
Ensure this MCU on the program window
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 *.bin 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.
The process should complete as shown by a green status bar in the bottom:
If everything went well, you'll see a message like this:
If not, contact us but repeat steps 3-7 :)