Hi Brandon Varner,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
I'd highly recommend you to use the ISP commands to update the user application code.
And The ISP mode is entered after a power on reset or Re-invoke ISP command is executed in user application.
You can learn the more information about the ISP by refer to the Chapter 32: LPC176x/5x Flash memory interface and programming in the UM10360. Have a great day,
Ping
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