To install Custom Firmware on your 3DS, follow the guide by clicking on the button below.
To install Pretendo Network on your 3DS, follow the guide by clicking on the button below.
To install JKSM on your 3DS, download it from Universal Updater.
To enhance your StreetPass Mii Plaza experience on your 3DS, follow the guide below (some of the steps include tips or information and are not related to the core installation). It is recommended that you have the StreetPass Mii Plaza update data and DLC installed on your device before proceeding (a guide on how to do this is not provided).
Follow this guide to install the Puzzle Swap SpotPass data for all 63 puzzles: https://docs.google.com/document/d/1rJqhJRl9Q98n97QjsYJONY0izU4e0djyqnJt1unp5vQ/edit
This spreadsheet lists the Puzzle Swap panels and piece counts: https://docs.google.com/spreadsheets/d/1-NEUpjxZV62CNkpRRbbV6IezhhzQtZG0mwvCmHrhwdk/edit?usp=sharing
Follow this guide (comment #2) to deal over 50 damage in a single turn in Find Mii: https://gamefaqs.gamespot.com/boards/625899-streetpass-mii-plaza/62559568
Follow this guide ("21 single-mii run (Golden Key awarded)" in comment #7) to unlock the bottom-right room (Sealed Passage) in Find Mii II's Secret Quest: https://gamefaqs.gamespot.com/boards/625899-streetpass-mii-plaza/65609221
This spreadsheet lists the recipes for Feed Mii: https://docs.google.com/spreadsheets/d/1omiAIVddpSOuGGiRKAWWDcvXGq61IKIx0-imOu8Oiis/edit#gid=0
Follow this guide to defeat the rare zombies: https://gamefaqs.gamespot.com/3ds/625899-streetpass-mii-plaza/faqs/71513
To collect StreetPasses over the Internet, install NetPass on your 3DS. To do this, open Universal Updater on your 3DS.
Use the D-Pad to hover over NetPass, and click A.
Use the D-Pad to hover over netpass.cia, and click A.
Click A (Confirm).
Once the installation is complete, the number "0" will be visible on the left side of the bottom screen. Press the HOME button to exit Universal Updater and NetPass will be available on your 3DS.
For more information on NetPass, see here: https://gbatemp.net/threads/a-new-way-to-experience-streetpass.653810/
To collect Play Coins quickly, install Fast PlayCoin on your 3DS. To do this, open Universal Updater on your 3DS.
On the left side of the bottom screen, click on the magnifying glass icon. In the search bar, type "fast" (without quotation marks) and click OK on the bottom screen.
A coin icon should appear on the top screen. Click A, use the D-Pad to hover over FastPlayCoin.cia, and click A.
Click A (Confirm).
Once the installation is complete, the number "0" will be visible on the left side of the bottom screen. Press the HOME button to exit Universal Updater and Fast PlayCoin will be available on your 3DS.
Launching Fast PlayCoin automatically gives you 300 Play Coins in a few seconds (no input is needed).
For more information on Fast PlayCoin, see here: https://www.gamebrew.org/wiki/Fast_PlayCoin_3DS
To install CTGP-7 (a mod for Mario Kart 7 that adds various new features) on your 3DS, follow the guide by clicking on the button below.