EF-S 55-250mm f/4-5.6 IS STM Firmware Version 1.0.3 [Mac OS X]
Content Id: 0400217402
Firmware Version 1.0.3 incorporates the following enhancement. 1. Improves the autofocus speed when the EF-S 55-250mm f/4-5.6 IS STM is attached to the EOS M3. *To mount the EF-S 55-250mm f/4-5.6 IS STM to the EOS M3, the mount adapter EF-EOS M is required. *The enhancement in the autofocus speed only applies when the lens is used with the EOS M3.
Firmware Version 1.0.3 is for lenses with firmware Version 1.0.2. If the lens firmware is already Version 1.0.3, it is not necessary to update the firmware.
Identification procedure If the 3rd digit in the serial number of your lens is either 0, 1, or 2, then it is equipped with firmware Version 1.0.2 e.g.
xx0xxxxxxx, xx1xxxxxxx, xx2xxxxxxx
Lenses with serial numbers other than those listed above are equipped with firmware Version 1.0.3 or later.
Cautions: *To update the firmware of the EF-S 55-250mm f/4-5.6 IS STM, the EOS M3 and the mount adapter EF-EOS M are required.
*If an extension tube is attached, the firmware update may not be carried out successfully, so please make sure to detach the extension tube before performing the firmware update.
*For this firmware update to be effective, you need to update the firmware of the EOS M3 to the latest version (Version 1.0.1 or later).
Customers who do not own an EOS M3, but wish to have the firmware of their lenses updated with Firmware Version 1.0.3 are asked to contact the Canon Customer support Center.
Q&A: Preparations for a firmware update: Macintosh After the downloaded compressed file (.dmg file) is extracted, a firmware folder is created.
*Extracting the downloaded file: The downloaded folder is automatically extracted, and a firmware folder is created. If the download folder cannot be automatically extracted, double-click the folder.
Preparations for the firmware update: In the folder you downloaded is the firmware (file name: EF010103.lfu / file size: 1,441,844 bytes), and instructions on the update procedures (a PDF file in five languages: Japanese, English, French, Spanish, and Simplified Chinese). Before updating the firmware of your lens, please be sure to carefully confirm your understanding of these instructions.
File Name : efs55250stm-v103-mac.dmg File Type : FA File Size : 1889821KB
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