Teensy version

[aacuevas]

The developer guide specifies Teensy 3.2, however some devices feature a Teensy LC. This should be stated and, ideally, there should be a way to tell them apart

[cjsha]

this has been fixed: https://open-ephys.github.io/commutator-docs/user-guide/firmware-update.html

relevant commit: bfa414d