Item description:

Rehid is a HID module (which are responsible for user-input) rewrite with the aim of easier button remapping for the 3DS.

Features
Button remapping with the help of a json file.
IR module is patched automatically so ZL, ZR, Cpad Pro (Cnub) can also be remapped.
Different button remappings for different games.
Installation
You need to have the latest luma for this to work correctly.

Download the latest release of rehidhelper.3dsx.
Open homebrew launcher and run the 3dsx.
Click A on the Download Rehid option.
Restart your 3DS.

User guide
Remap Buttons
You first need to create a rehid.json file with the remappings you want. The file will contain what buttons you want to remap.

Option 1:

You can generate your rehid.json files using the site found below.
Once you have the file ready, run rehidhelper again.
Select the Scan QR code option, then scan your QR.

Remap site found here. [ Register or Signin to view external links. ]