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User:ManiacOfHomebrew/3DS 12-hour Clock: Difference between revisions

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add clarifications about 12-hour time, fix grammar, and "HOME Menu"
revert to layeredfs cuz luma is good now yay
 
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The 3DS uses the 24-hour time format to display the time on the HOME Menu among other applets. This guide shows you how to convert the 3DS system's clock on the HUD of the HOME Menu to a 12-hour format.
The 3DS uses the 24-hour time format to display the time on the HOME Menu among other applets. This guide shows you how to convert the 3DS system's clock on the HUD of the HOME Menu to a 12-hour format.


{{Info|text=This will not affect other applets such as System Settings or the Nintendo eShop at the moment, meaning you will only see a 12-hour clock on the HOME Menu.}}{{Info|text=The clock will display in Japanese 12-hour time, which means that 12:00 (both midnight and noon) will be displayed as 0:00. All other hours of the day function as expected.}}<!--
{{Info|text=This will not affect other applets such as System Settings or the Nintendo eShop at the moment, meaning you will only see a 12-hour clock on the HOME Menu.}}{{Info|text=The clock will display in Japanese 12-hour time, which means that 12:00 (both midnight and noon) will be displayed as 0:00. All other hours of the day function as expected.}}{{Info|text=Make sure you are using Luma3DS v13.4 or newer while using the mod. If you do not update, you may encounter issues with crashing when returning to the HOME menu.}}<!--
This guide is based heavily on a custom HOME menu guide by Dungeonfire available at https://axities.github.io/
This guide is based heavily on a custom HOME menu guide by Dungeonfire available at https://axities.github.io/
However, that guide is decently outdated, and users should be redirected to https://3ds.codeberg.page/homemenu/ instead.
However, that guide is decently outdated, and users should be redirected to https://3ds.codeberg.page/homemenu/ instead.
I left this comment here as attribution ~Aven
I left this comment here as attribution ~Aven
-->
-->


==What You Need==  
==What You Need==  
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{{success|text=The HOME Menu's clock should now be displaying 12-hour time.}}
{{success|text=The HOME Menu's clock should now be displaying 12-hour time.}}


|-|Patched CIA=
|-|Patched CIA (Not Recommended)=


{{Warning|text=<b>Read this box closely!</b>
{{Warning|text=<b>Read this box closely!</b>
*This method is much less preferred than LayeredFS, as it makes direct edits to your system HOME Menu. Only use this as a last resort and if troubleshooting LayeredFS was not successful!
*This method makes direct edits to your system HOME Menu.
*Create/update your NAND backup! When making changes to your device, there is always the chance you will brick.
*Create/update your NAND backup! When making changes to your device, there is always the chance you will brick.
*Having a custom HOME Menu installed breaks system updates. If you want to update your system, you will have to restore your HOME Menu with a blank <code>HomeMenu.cia</code> first.}}
*Having a custom HOME Menu installed breaks system updates. If you want to update your system, you will have to restore your HOME Menu with a blank <code>HomeMenu.cia</code> first.}}
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</tabber>
</tabber>


{{info|text=If the HOME menu does not boot or you encounter any other problem, it is recommended that you ask for help on the [https://discord.gg/nintendohomebrew Nintendo Homebrew Discord server] in one of the 3DS assistance channels, mentioning that you were following this guide.}}
{{info|text=If the HOME menu does not boot or you encounter any other problem, it is recommended that you ask for help on the {{ml|Get support|Nintendo Homebrew Discord server}} in one of the 3DS assistance channels, mentioning that you were following this guide.}}

Latest revision as of 15:53, 16 April 2026


Required Reading

The 3DS uses the 24-hour time format to display the time on the HOME Menu among other applets. This guide shows you how to convert the 3DS system's clock on the HUD of the HOME Menu to a 12-hour format.

Info icon This will not affect other applets such as System Settings or the Nintendo eShop at the moment, meaning you will only see a 12-hour clock on the HOME Menu.
Info icon The clock will display in Japanese 12-hour time, which means that 12:00 (both midnight and noon) will be displayed as 0:00. All other hours of the day function as expected.
Info icon Make sure you are using Luma3DS v13.4 or newer while using the mod. If you do not update, you may encounter issues with crashing when returning to the HOME menu.


What You Need

  • The latest version of Home Menu Rebuilding Tool
    • To download, click the green code button, and then Download ZIP.
  • The latest version of MSBT Editor Reloaded
  • The latest version of GodMode9 installed
  • A computer running Windows, or Wine for Mac/Linux (Required to run MSBT Editor)

Instructions

Info icon In this guide, <Your language> is to be substituted with your consoles language selection. For example, US_English.

Section I: Prep Work

  1. Extract Home Menu Rebuilding Tool as well as MSBT Editor Reloaded to a new folder on your computer
  2. Press and hold Start, and while holding Start, power on your console. This will launch GodMode9
  3. Press HOME to bring up the action menu
  4. Select "Title manager"
  5. Select "[1:] NAND / TWL"
  6. Scroll down through the list and select a title labeled (CTR-N-HMME). This is the HOME Menu application
  7. Select "Manage Title..."
  8. Select "Build CIA (standard)"
  9. Push A once it is finished
  10. Push R+Start to power off the console
  11. Insert the SD Card into your computer
  12. Backup the .cia file in the gm9/out folder to a safe place on your computer. It ends with (CTR-N-HMME).standard.cia
  13. Make another copy of this .cia file in the folder created in step 1
  14. Rename it to HomeMenu.cia
  15. Copy HomeMenu.cia to the Home Menu Rebuilding Tool folder

Section II - Modifying

  • Open HMRT.bat
  • Push 1 on your keyboard to extract the components of the Home Menu
  • Push 5 on your keyboard to decompress the components
  • Keep the window open and open MsbtEditor.exe
  • Drag the file named hud_msbt.LZ from ExtractedRomFS/message_hud/<Your language> into MsbtEditor
  • Scroll down and select lau_hours in the list on the left
  • Change %H to %h in the first text box labeled "Edit:"
  • Push Ctrl+S to save, then close MsbtEditor

Section III - Installing

The file structure for a US_English 12-hour time patch file.
  1. In the Home Menu Rebuilding Tool window, push 6 on your keyboard to recompress the components
  2. Close the Home Menu Rebuilding Tool window.
  3. On your 3ds SD Card, create the following folder corresponding to your region:
  • JPN: luma/titles/0004003000008202/romfs
  • USA: luma/titles/0004003000008F02/romfs
  • EUR: luma/titles/0004003000009802/romfs
  • CHN: luma/titles/000400300000A102/romfs
  • KOR: luma/titles/000400300000A902/romfs
  • TWN: luma/titles/000400300000B102/romfs
  1. Create the message_hud/<Your language> folder inside the romfs folder.
  2. Copy hud_msbt_LZ.bin from ExtractedRomFS/message_hud/<Your language> to the new folder.
  3. Eject your SD Card and put it back in the console.
  4. Start your device and hold SELECT to enter the Luma3DS configuration screen
  5. Press (A) on ( ) Enable game patching to tick it (if it is not already ticked) (x)
  6. Press START to boot the the HOME Menu
Success icon The HOME Menu's clock should now be displaying 12-hour time.
Warning icon Read this box closely!
  • This method makes direct edits to your system HOME Menu.
  • Create/update your NAND backup! When making changes to your device, there is always the chance you will brick.
  • Having a custom HOME Menu installed breaks system updates. If you want to update your system, you will have to restore your HOME Menu with a blank HomeMenu.cia first.
  1. In the Home Menu Rebuilding Tool window, push 6 on your keyboard to recompress the components
  2. In the Home Menu Rebuilding Tool window, push 2 on your keyboard to rebuild the HomeMenu CIA.
  3. Copy the outputted HomeMenu_edited.cia file to the root of the SD card
  4. Press and hold Start, and while holding Start, power on your console. This will launch GodMode9
  5. Navigate to the [0:] SDCARD drive, then select the HomeMenu_edited.cia file
  6. Select "CIA Image options..."
  7. Select "Encrypt file (...)"
  8. Select "Encrypt inplace"
  9. After it is finished, push A to continue
  10. Select the HomeMenu_edited.cia file again
  11. Select "CIA Image options..."
  12. Select "Install game image"
  13. Press A to unlock SysNAND (lvl1) writing, then input the key combo given
  14. Push A twice then Start to reboot
Success icon The HOME Menu's clock should now be displaying 12-hour time.
Info icon If the HOME menu does not boot or you encounter any other problem, it is recommended that you ask for help on the Nintendo Homebrew Discord server in one of the 3DS assistance channels, mentioning that you were following this guide.
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