This package contains Python tools to communicate with Ledger Blue and Nano S and manage applications life cycle.

It is recommended to install this package in a Virtual Environment in your native environment (not a Docker image) to avoid hidapi issues.

virtualenv ledger
source ledger/bin/activate
pip install ledgerblue

• libudev-dev
• libusb-1.0-0-dev
• python-dev (python 2.7)
• virtualenv

This package can optionally work with libsecp256k1 Python bindings compiled with ECDH support. If you wish to enable libsecp256k1 bindings, make sure to install libsecp256k1 as follows:

SECP_BUNDLED_EXPERIMENTAL=1 pip --no-cache-dir install --no-binary secp256k1 secp256k1

When running on Linux, make sure the following rules have been added to /etc/udev/rules.d/:

SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0000", MODE="0660", TAG+="uaccess", TAG+="udev-acl" OWNER="<UNIX username>"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0001", MODE="0660", TAG+="uaccess", TAG+="udev-acl" OWNER="<UNIX username>"

Use the following Target IDs (--targetId option) when running commands directly:

• 0x31100002 on Nano S (until firmware 1.3.1, included)
• 0x31100003 on Nano S (after firmware 1.3.1)
• 0x31000002 on Blue