: One of the most famous "blog-style" technical deep dives comes from researcher Andrew "bunnie" Huang
Wait, but sometimes the boot ROM image might refer to the factory pre-programmed ROM that handles the initial boot process. For NXP MCUs, there is a bootloader (like MCUXpresso Bootloader) which can be customized, but the boot ROM itself is internal and not something you download. So maybe the user is confusing the concept here. They might actually be looking for a way to boot from a ROM or a specific firmware.
Related search suggestions (you can use these terms when searching): MCPx boot ROM, MCPx firmware download, MCPx unbrick guide.
Do not confuse the MCPX Boot ROM with the BIOS (TSOP) . The TSOP holds the kernel (like 4034, 5101, etc.). The MCPX ROM is much smaller and lives inside the proprietary chip.