EF-S 55-250mm f/4-5.6 IS STM Firmware Update version 1.0.3

This firmware update (Version 1.0.3) for EF-S 55-250mm f/4-5.6 IS STM with firmware Version 1.0.2 or earlier.

EF-S 55-250mm f/4-5.6 IS STM Firmware Update version 1.0.3

Thank you for using Canon products.

Firmware Version 1.0.3 incorporates the following enhancement. 

1. Improves the autofocus speed when the EF-S 55-250f/4-5.6 IS STM is attached to the EOS M3.

To mount the EF-S55-250mm 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-S55-250mm 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 Centre.