Please make sure that your camera has the latest firmware version installed. Please check with your camera manufacturer that you have the latest version of your camera firmware installed (e.g. website). Please follow the camera manufacturer’s instructions when upgrading the camera firmware.
1.) Select Menu --> Settings --> Version on your camera.
2.) The currently installed versions of the firmware for the camera and lens are displayed. If no firmware version is displayed here for the lens (this is possible in the case of many camera models) the lens is still equipped with an older firmware version.
3.) No update is required for lens firmware versions (lens version) 02 and higher.
It is not possible to reinstall the previous firmware version after performing the firmware update. Sending the lens to us confirms your acceptance of this.