New Battery Firmware

Joined
Jul 8, 2015
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I have just purchased a new battery and i am not sure which firmware to flash it with? Do i even need to put firmware on the card or will it just update when i put it in the AC and turn it on?
 
The battery firmware will update if needed if the firmware is on the memory card.
 
The latest obviously.
Not "Obviously" since for example there were no firmware updates for the controller in one of the updates so we had to use an older firmware to update a newly purchased controller.

Please reserve your snotty comments for when you know what you are talking about.