Firmware: Canon EF 24-105mm f/4L IS II Update

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Firmware Version 1.0.4 is incorporated with the following correction.

Enhances the effects of image stabilization when using the EF24-105mm F4L IS II USM with the EOS 5D Mark IV at a shutter speed between 1/100 sec. and 1/160 sec.

Information about firmware Update

Firmware Version 1.0.4 is for lenses with Firmware Version 1.0.3 or earlier.
Lenses whose third digit in the serial number is “0”. (xx0xxxxxxx)
If the lens’ firmware is already Version 1.0.4, it is not necessary to update the firmware.
The lens firmware can be checked through the menu on the EOS 5D Mark IV.

Preparations for the Firmware Update:

In the folder you downloaded are the firmware (file name: EF012104.lfu / file size: 1,441,844 bytes), and instructions on the firmware update procedures (a PDF file in five languages: Japanese, English, French, Spanish, and Simplified Chinese).
Before starting the firmware update operations, please be sure to carefully confirm your understanding of these instructions.