Ledger Nano™ Gen5 porting

If you need to adapt a device app to be compatible with the Ledger Nano™ Gen5, follow the guidelines below. Get in touch with your usual contact at Ledger if you are not sure if you should proceed with the modifications.

What needs to be updated

• Create two icons for your application: a 48x48px B&W png and a 32x32px B&W png
  • Add the 48x48px in the glyphs folder, and use this naming template app_yourcoin_48px.png
  • Add the 32x32px in the icons folder, and use this naming template app_yourcoin_32px.png
• For C applications, update the makefile, with the the 32px icon target

  ICON_APEX_P = icons/app_yourcoin_32px.png
• For Rust applications, update cargo.toml with the Nano Gen5 target (apex_p)

  [package.metadata.ledger.apex_p]
  icon = "icons/app_yourcoin_32px.png"
  # ...
  unexpected_cfgs = { level = "warn", check-cfg = ['cfg(target_os, values("apex_p", "stax", "flex", "nanos", "nanox", "nanosplus"))'] }
• For both C and Rust applications, update ledger_app.toml with the Nano Gen5 target (apex_p)

  devices = ["nanox", "nanos+", "stax", "flex", "apex_p"]
• Add tests for Nano Gen5
• Add the Nano Gen5 target (apex_p) to your App in the the Ledger App Database

Examples

You can use our Boilerplates Apps update to understand the required modifications.

• For Device Apps in C, read this PR.
• For Device Apps in Rust, read this PR.

Submission

Use the submission form to submit your update.