A free app for Android, by SHIMANO INC..

E-TUBE PROJECT is an application that allows you to update your bicycle’s firmware and change Di2 settings by connecting wirelessly.

You can also customize the functions and operations as you please. Also, make the most of the trail ride by personalizing the settings.

To start, E-TUBE PROJECT needs to be installed on your mobile phone or tablet. To update your bicycle’s firmware. The device then reads the information stored in the firmware, which is the software that is used to control the functions of the bicycle.