To check the firmware version, power on the unit while pressing both the energy/settings dial and on/off buttons at the same time.
B1 requires a Mini USB cable for firmware upgrades and this is included in all B1 kits.
To access the latest free upgrades, you create your personal account on profoto.com/myprofoto. Once you have an account you can also choose to register your products and receive notifications about when new upgrades are released.
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