Nimbus

Pretendo account manager for the 3DS

Grab the latest app and IPS patches from the Releases page
Extract to the root of your 3DS SD card
Install the Nimbus homebrew using FBI (or FBI Reloaded) if using the CIA build
Run the Nimbus homebrew and select either to use a Pretendo or Nintendo account
- If it doesn't work, reboot your 3DS while holding SELECT and ensure that "Enable loading external FIRMs and modules" and "Enable game patching" are both turned on, as well as ensuring that your Luma3DS version is 13.0 or higher.

Clone the repository recursively using git clone https://github.com/PretendoNetwork/nimbus --recursive
- If you have cloned the repository previously, please run git pull and make clean while in the nimbus folder to avoid errors and broken files
- On top of that, if you cloned it before 1.0.2 released, you might also need to run git submodule update --init --recursive while in the nimbus folder
Install devkitARM, libctru, armips, makerom, bannertool and flips
Copy decompressed code.bin files from the friends, ssl, miiverse, and act sysmodules in their respective patches directories (any Miiverse code.bin works for the miiverse module)
Run make

Thanks to:

pinklimes for the CIA version banner
TraceEntertains for making a CIA version of Nimbus and maintaining the project
DaniElectra for making the 3DS HTTP and Socket patches
SciresM for making the 3DS SSL patches
zaksabeast for the original 3ds-Friend-Account-Manager and all the research into the friends and act system titles
shutterbug2000 for the GUI
libctru for the frda.c base, homebrew template, and other library functions (and thanks to citro2d for part of a system font function)
Universal-Core for the string drawing functions
Fangal-Airbag for making the account switcher GUI support button controls
All other 3DS researchers