Be warned – E-TUBE PROJECT Cyclist Review

This has crashed my Di2 setup too many times, I’ll go you solution to fix. Problem is it updates firmware once it connects and if any hiccup in connection it locks the Di2 and makes shifting unusable. Fix is to disconnect every component from the battery count to 30 and reconnect. If you still insist on using, avoid the auto update of firmware by making sure phone is not connected to net via WiFi or cell. Best way is to avoid all together and use a PC version of E-TUBE to make adjustments.
Review by Lost 22 still going on E-TUBE PROJECT Cyclist.