iPad Screenshots


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

Customize functions and operations as you please. Discover the settings that match your personal riding style.

Update firmware
The application automatically checks for new firmware each time it is started. This allows you to keep all units up-to-date at all times.

Error check
If you notice an abnormality, immediately perform a diagnosis using the app. The unit at issue is identified, allowing you to quickly and easily seek repairs.

This function allows you to connect one or more units and read or write all the settings of those units at a time. The readout settings can be saved in a file. The settings can also be successively written to multiple bicycles.

What’s New

Version 3.4.4

Bug fixes the issue of current E-TUBE PROJECT for Tablet/Smartphone (Ver.3.4.3) for iOS that cannot proceed the connection with Bluetooth after iOS 13.

Ratings and Reviews

1.6 out of 5
8 Ratings

8 Ratings

LaughingSaint ,

Still haven’t fixed firmware updates

Will not update firmware no matter how I’m connected or what device !!!!!

pgreen8448 ,

Easy to use

Initially their is a glitch to operating this, that is because the FIRST time you use it, and it updates your components, your di2 becomes locked. The work around is to switch to a different device another phone or tablet, with the E-TUBE project software loaded, and get it reconnected (you won’t see any lights or movement, but it will search out and rediscover your di2. The new connection finishes where it left off from the old device, in upgrading your new components, and then you can go back to using the old device, or stick with the new one.

After you get through the above mess, setting the unit, changing cog settings and even making micro shift adjustments are a breeze. Just gotta remain calm through the initial setup.

Dry Side 100 ,

Without fail this app will brick the Di2 battery

Avoid Di2 firmware updates with app. It will brick the battery and the only way to restore battery is with the Di2 PC/Windows programmer.


180.8 MB

Requires iOS 10.0 or later. Compatible with iPad.


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Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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