MCX N94x / N54x Boot ROM update to vT1.1.5

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Introduction

This article describes the method to update the Boot ROM patch on MCX N94x / N54x devices to patch version T1.1.5.  

Before beginning, note that this process can only be performed via ISP mode of the device and can only be performed using a command line method.  The NXP Secure Provisioning tool uses command line operations in its backend and does make these available to the user.  For directions on how to access the command line interface through the Secure Provisioning tool, consult your Secure Provisioning Tool documentation. 

Command line blhost method

ISP Pin Method

1) With the device powered off, assert the ISP pin (GPIO P0_6) by pulling this pin low.

2) With ISP pin still asserted, power on the device.  

3) After the device has fully powered on (at least as long as the t_POR time quoted in the Power mode transition operating behaviors table of the MCX N94x / N54x datasheet), release the ISP pin. 

4) Open a command prompt and set the working directory to your blhost installation.

5) Verify that the current version of ROM patch is not T1.1.5 using this command: blhost <interface> <parameters> -- get-property 24. 

a) Where <interface> should be replaced with the code for the interface type and <parameters> should be replaced with the parameters of that interface.  For more information on this syntax, refer to the blhost User's Guide.  

6) Execute this command:  blhost <interface> <parameters> receive-sb-file <path_to_file_location>/mcx_n10_a1_prov_fw_rp_v5.0.sb3. 

7) Repeat steps 1 - 5 to verify that the ROM version is T1.1.5. 

ISP Pin Unavailable - SWD Method

1) Connect to target via SWD

2) Open the secure provisioning tool

3) Select the serial interface window and select the command line button

4) Send the following command: nxpdebugmbox -i pyocd ispmode -m 0

5) Verify that the current version of ROM patch is not T1.1.5 using this command: blhost <interface> <parameters> -- get-property 24. 

a) Where <interface> should be replaced with the code for the interface type and <parameters> should be replaced with the parameters of that interface.  For more information on this syntax, refer to the blhost User's Guide.  

6) Execute this command:  blhost <interface> <parameters> receive-sb-file <path_to_file_location>/mcx_n10_a1_prov_fw_rp_v5.0.sb3

7) Repeat steps 1 - 5 to verify that the ROM version is T1.1.5.