If your NUCLEO, DISCO or EVAL board is missing, post an issue and we'll add it. The stm32-secure-patching-bootloader reserves between 40 ... hex file remains compact because it contains just the data ...

Bootloader for STM32 Nucleo-F446RE This repository contains a custom UART-based bootloader for the STM32 Nucleo-F446RE microcontroller. The bootloader allows for secure and flexible firmware updates ...