Firmware Version - Nikon D300 Complete Manual

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If the camera is now working normally, set the date, time, and

any other settings you may have lost (the camera should be

set back to the way it came from the factory). If the camera

still isn't working properly and you've checked to make sure

that you haven't made a setting that is causing a problem,

you'll have to return it to Nikon for servicing (see "Getting

Service" on page <761>).

Why turn the camera On in Step 3? We want the camera to

exhaust any internal capacitors that are storing charge and

holding values that need to be reset. We want the camera to

come up in a "clean" state when we restore power.

Firmware Version

The D300 shipped with firmware labeled A1.01, B1.00, and

for the WT-4 L1.0.

In February 2008 Nikon introduced an update to the "A"

software, version A1.02. This update fixes a problem that

generates vertical lines in images shot with shutter speeds

longer than eight seconds.

The three letter-number combinations refer to different

sections of the software in the camera. Speculation has it

that A refers to user software (menu system) after

initialization, while B refers to the low-level firmware; L

refers to the WT-4 firmware and appears only if the

accessory is attached.

To determine which version you have:

1. Press the MENU button to see the menu system.

2. Use the Direction pad keys to navigate to the SETUP

menu (wrench icon tab).

Thom Hogan's Complete Guide to the Nikon D300