ShadowNAND

CFW in your NAND. ##How to Install

Download ShadowNAND Installer from here
Download ShadowNAND itself from here
Download other required files from here
Put ShadowNAND files, other required files, and your otp.bin to SD:\homebrew\3ds\ShadowNAND_Installer
Boot from ShadowNAND_Installer.bin or other entry points.
Press SELECT
Done. ##How to use
Install.
Download and install SaltFW v3.0 in ShadowNAND way (boot.bin in /homebrew/3ds/)
SaltFW is the companion CFW for ShadowNAND until ShadowNAND has more features.
Done. ##What can it do:
Boot homebrew/3ds/boot.bin, this can be any payload.
Boot homebrew/3ds/boot.bin with screeninit by pressing DPAD_LEFT on launch.
Boot homebrew/3ds/bootmgr.bin by pressing DPAD_DOWN on launch, this can be any payload.
CtrBootManager9 is the bootmanager of choice. Download here.
Boot to SysNAND if no payload or SD found. (thanks to @AuroraWright) ##SysNAND booting:
Patches firmwrites, so you can update your sysNAND.
Patches sigchecks so it can show/launch unsigned programs.
No reboot patches yet, so no AGB/TWL/SAFE_MODE booting. ##Planned features:
Splash screen.
Reboot patches.
AGB/TWL FIRM patches.
Built-in bootloader with GUI.
EmuNAND support.
External injector/loader support.
Region/Language emulation.
Region-free patches.
firmware.bin support.

Credits

sdmmc.c & sdmmc.h originally written by Normatt Licensed under GPLv2 or any later version, refer to the license.txt file included.

Smealum and contributors for libctru
Normatt for sdmmc.c and .h, and also for .ld files and the log from 3dmoo9 that provided us with some of the information needed to get screen init
Christophe Devine for the SHA codes
Archshift for i2c.c and .h
Megazig for crypto.c and .h
Patois for original BRAHMA code
Smealum, Derrek, Plutoo for publishing the exploit
Yellows8 and Plutoo as ideators of it
3dbrew community
bilis/b1l1s for his screen init code, and work on inegrating it into stage 2
dark_samus for work on integrating screen init into stage 2
AuroraWright for the main features.