We typically release betas before publicly releasing an official, signed firmware update.
Our beta releases are signed by our Beta PubKey. To test a beta, you'll need to load our Beta PubKey onto your Passport:
Download and save
beta-pub.bin, which can be found in the Github release files, onto a microSD card
Navigate to Settings – Advanced – Developer PubKey
Insert your microSD card that contains
Select Install PubKey
If you already have an existing Developer PubKey saved in Passport, first select Remove Pubkey
beta-pub.bin is installed on your device, you can go ahead and install the beta firmware release as usual.