(BootROM) itself is generic across consoles, it is often generated alongside movable.sed are unique to your console.
While possessing a dump of your own console’s BootROM for personal, educational, or archival purposes is generally considered legal under fair use (in the US) and similar doctrines elsewhere, . Always dump your own boot9.bin from your console—never download one from a stranger on a forum. Downloaded files could be corrupted, malicious, or come from a different 3DS hardware revision, causing unpredictable bugs. boot9.bin file
during boot to access the bootloader, where you can dump the bootrom directly. Why You Need It Emulator Setup : Most 3DS emulators, like (BootROM) itself is generic across consoles, it is