What is A, B and L in firmware?

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Cowleystjames

Senior Member
Bit confused as to what A,B and L are in the firmware update.
Just updated my brand new D800e and was surprised to need to do the firmware on it, but then got curious as to what these letters referred to.
I'm now at A 1.01, B 1.02, and L 1.006.
I've done a search and really haven't found an answer.

Sent from my HTC One X+
 
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carguy

Senior Member
Firmware is a read only set of instructions that is embedded in a hardware device to either add or improve function. Sometimes there are two parts to a Nikon firmware update labeled A or B. Some updates will perform either A or B, and others may perform A and B. Some updates will perform both A and B at the same time, and others may only do one at a time. Please read the instructions carefully before performing the update, as firmware updates are permanent and cannot be 'undone' outside of the service department. Newer firmware versions will overwrite older versions and will also include all previous update changes.
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Current Firmware downloads available for Nikon products
 
Disorderly

Disorderly

Senior Member
As I understand it, the firmware for the camera is in two banks. A and B are the two parts. L refers to firmware on your lens. Yes, some lenses are upgradable or at least reparable via software update.
 
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