This video is the updated guide on how to install cia format file directly to your sd card using custom-install script
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LINKS

Python : https://www.python.org/
Custom Install : https://github.com/ihaveamac/custom-install
Older version : https://drive.google.com/open?id=1APhJY3_FIolRktfaL8GBsbOIF2k5pu-r
Custom install finalize : https://github.com/ihaveamac/custom-install/releases/tag/finalize-1.4
SeedDB : https://github.com/ihaveamac/3DS-rom-tools/wiki/SeedDB-list
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MUSIC
https://elements.envato.com/battle-BEMTWA5
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DONATION

If you want to make a donation, click the link below

https://www.patreon.com/sthetixofficial

Thank you
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HOW TO CONTACT ME

Facebook : https://www.facebook.com/sthetixofficial
Twitter : https://twitter.com/sthetixofficial
Instagram : sthetixofficial
Discord server : https://discord.link/sthetix
Discord : sthetix#7311
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CREDIT :

ihaveamac

source