This is the documentation for the latest (main) development branch of mcuxpresso sdk. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

How to set the board to the Bootloader ISP mode

On the KW45B41Z-EVK board:

1. Press and hold the BOOT CONFIG switch, SW4.

2. Connect the KW45B41Z-EVK board via the micro-USB connector to the PC.

3. Release the switch SW4.

4. Check the associated USB port number on the PC (such as, COM10).

5. While the KW45B41Z is in bootloader ISP mode, navigate to the folder where blhost.exe is located.

6. Type the command .\blhost.exe -p COM10 -- get-property 1 to make sure that the KW45B41Z is in Bootloader ISP mode, you should see:

   Ping responded in 1 attempt(s)

   Inject command ‘get-property’

   Response status = 0 (0x0) Success.

   Response word 1 = 1258488064 (0x4b030100)

   Current Version = K3.1.0

On a custom board:

1. Short the BOOT_CFG pin to VDD while reset.