.FIRM File Extension

Boot9Strap 3DS Firmware File

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What is a FIRM file?

A FIRM file is a firmware file used by Boot9Strap, a program used to install custom firmware on a Nintendo 3DS video game console. It contains data used to modify a Nintendo 3DS for various purposes, such as adding support for software, modifying a game, or providing boot-up directions. FIRM files are commonly used for storing Luma3DS firmware.

More Information

Instead of .BIN files, Boot9Strap uses FIRM files for payloads. FIRM files are typically placed and located in the "boot9strap" folder on the SD card of the Nintendo 3DS.

How to open a FIRM file

Most users do not need to open FIRM files on a computer. Instead, they install FIRM files directly on a Nintendo 3DS gaming console with Boot9Strap. However, users can also parse, extract, and build 3DS Firmware FIRM files on their computer with the free firmtool utility.

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Programs that open FIRM files


Verified by FileInfo.com

The FileInfo.com team has independently researched the Boot9Strap 3DS Firmware file format and Mac, Windows, and Linux apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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