E-tube Project 5.2 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions among E-tube Project users are 3.4, 3.3 and 3.2.
This free software is a product of Shimano, Inc. This PC program is suitable for 32-bit versions of Windows XP/XP Professional/Vista/7/8/10/11. The software relates to System Utilities. Commonly, this program's installer has the following filename: E-tube Project.exe. We recommend checking the downloaded files with any free antivirus.
From the developer:
E-TUBE PROJECT is an application that allows you to update your bicycle's firmware and change DI2 settings when connected to a PC, tablet, or smartphone.
You may want to check out more software, such as RationalPlan Multi Project, RationalPlan Project Viewer or Projector, which might be related to E-tube Project.