Hey. I'm gonna show you how to install a custom font on a Nintendo Switch.

This is the Super Mario Sunshine font showing on Home Menu and some other games that use system font.

The easy way (recommended)

- Get NXThemesInstaller
- Drop .nro into sdmc:/switch
- Add TTF fonts to sdmc:/themes
- Launch NXThemesInstaller
- Install the font
- Reboot CFW
- Done

Spoiler: The old way

This was before the NXThemesInstaller font support exists.

What you need
BFTTFutil


Creating BFTTF - Binary Café TrueType

First of all, we are going to convert TTF/OTF to BFTTF.

Put both BFTTFutil.exe and the .ttf or .otf in the same folder.

Open up PowerShell or Command Prompt and type this command

BFTTFutil.exe -enc_nx Delfino.ttf Delfino.bfttf

or

BFTTFutil.exe -enc_nx Delfino.otf Delfino.bfttf

You'll get the BFTTF

Thanks to @p-sam for finding a way to load fonts via LayeredFS so we don't need to permanently replace system files thus risking a brick.

Copy the bfttf to D:\atmosphere\titles\0100000000000811\romfs
Rename the bfttf to nintendo_udsg-r_std_003.bfttf

Go to D:\atmosphere\titles\0100000000000039\flags
Create a new file as fsmitm.flag

Boot in Atmosphere CFW.

If you get past the Nintendo Switch splashscreen, congratulations!

Known issues

Filesize limitation
For some reason, fonts can't be bigger than the original font, the font (bfttf) has to be less than 1.95MB or else your Switch won't boot. You could try trimming some unused characters with FontForge.


Happy font hacking!

 

[Deleted User]

fsmitm does work, you just need to enable it for the shared database services.

For those who would wanna try it:

• Create an empty file at sd:/atmosphere/titles/0100000000000039/flags/fsmitm.flag
  
• Copy your custom font encoded earlier with bftffutil at sd:/atmosphere/titles/0100000000000811/romfs/nintendo_udsg-r_std_003.bfttf

Good job! You saved their lives from risking the brick. It works. No more system file replacement.

 

[JokerD]

This methon no more working on FW 9.1 ATM 0.10.1

 

[Naked_Snake]

This methon no more working on FW 9.1 ATM 0.10.1

I have let scires know he has fixed it for the next release of ASM
https://github.com/Atmosphere-NX/Atmosphere/commit/3e2ec256ab4608c81303229c45650c2925c5f7a1

 

[Goginha]

It worked on 10.2.0

 

[Spider_Man]

i just googled this and saw this topic, im on the latest atmos and when i go to system data management to delete game saves i get a crash error with this code 0100000000000039?

 

[staticpirate]

i just googled this and saw this topic, im on the latest atmos and when i go to system data management to delete game saves i get a crash error with this code 0100000000000039?

Me too... Since 2 years ago and i don't know what is this :/

 

[Magrid_]

how to go back to the original font??

 

[masagrator]

how to go back to the original font??

Delete folder "0100000000000811" from atmosphere/contents

 

[Magrid_]

Delete folder "0100000000000811" from atmosphere/contents

thank i resolved by uninstalling theme from nx theme

 

[krisxxx381]

i serach font pls help

 

[krisxxx381]

i search fonts for nintendo switch anybody can help ?