This new release greatly simplifies fastboot3DS setup even for novice users. If you had problems with GodMode9 v1.8.0 and Luma 9.1, or if you're just curious, it is suggested you use this release to switch to fastboot3DS now.

Here's a small quick setup guide:

1. Create a folder called ofi on your 3DS SD card.
2. Download fastboot3DS and copy fastboot3ds.firm from the ZIP file to ofi/fastboot3ds.firm on your SD card.
3. [optional] Get GodMode9 and copy GodMode9.firm to gm9/payloads/GodMode9.firm on your SD card. If you are a Luma 3DS user, move GodMode9.firm from luma/payloads/GodMode9.firm to gm9/payloads/GodMode9.firm.
4. Copy OpenFirmInstaller.firm from the release ZIP to your SD card. If you are a Luma 3DS user, the file goes to luma/payloads/OpenFirmInstaller.firm.
5. Run OpenFirmInstaller.firm from your SD card. For a Luma 3DS user, thats as simple as holding START when booting the console and selecting OpenFirmInstaller.firm when (if) prompted. You may also run OpenFirmInstaller.firm from GodMode9 (via [A] -> FIRM options... -> Boot FIRM).
6. Follow the on screen instructions. When you're asked to input a key sequence to confirm, input the key sequence.
7. Done, now fastboot3DS is your bootloader. Further configuration is not required. Your CFW is autobooted as you are used to, and if - you installed it - GodMode9 is booted when you hold START after turning on your console.

Thanks go to everyone involved in this release, especially to @Wolfvak for Makefile edits, @al3x10m for testing and @luigoalma for memcpy fixes. Also thanks to @profi200 and @derrekr for being great fellow devs.

First public release of OpenFirmInstaller - thanks everyone who helped make this possible!