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When it comes to the update method, usually, you must copy the firmware file onto a compatible memory card, insert it into the camera, and browse from the menu to the device's update section.
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Moreover, make sure that the battery is fully charged and don't use the camera's buttons while the installation is in progress. This process isn't intended to be destructive, but still, it's best to save all your personal data and configurations before applying a different firmware. It is recommended that changing the camera's firmware be performed when the new release resolves an issue that your device has been encountering, or adds a new feature (or enhances an existing one) that could prove useful for you. However, bear in mind that applying an earlier build might not always be possible. On the other hand, downgrading the camera's firmware can recover its functionality in the unlikely event the currently installed version is faulty or the device's performance dropped after an upgrade. Updating to a newer firmware version than the one already installed on your camera can improve the device's overall performance and stability, resolve various issues, and add support for newly developed features or enhance existing ones. Corrects some errors in the message displayed on the LCD screen when saving RAW images developed in the camera. Fixes a phenomenon in which the maximum number of images that can be captured in a burst displayed in the viewfinder may be less than what can actually be captured. Fixes a phenomenon in which the camera stops working when the auto power off setting takes effect.
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