E-TUBE PROJECT Cyclist 4+

I spend 3.5k on Di2 and then try and use a totally useless app that won’t connect or register me. My SPRM works easily in other bike. Totally rubbish.

I was not expecting much from this app after the reviews I have read, and confess I didn’t use it at first after switching my old mechanical groupset for Di2.
However, frustrated at not being able to get the gear alignment right using micro adjustment on the levers, I tried using the app.
Oh, how I wish I’d done this sooner. This made setting both the front and rear mech alignment so much easier and I now have a groupset that shifts seamlessly.
My one frustration is that connecting via the app is rather temperamental.

As with other reviews, using this was an exercise in frustration. Connected to my di2 easily enough but then fell over when trying to update firmware. Followed recommended steps to try and get the thing to update again but after several attempts, I still got the error and it looked like my di2 was bricked. No response from the junction A box, couldn’t shift gears, nothing.

In desperation I downloaded the tablet version of the app on my iPad Pro. I connected to the unit and this time all the firmware updates went through smoothly.

What I discovered in the process is that it’s really important to disconnect from Bluetooth LE when you’re done using the app. If you don’t, it looks like your gears are dead because the di2 system doesn’t respond. Once I disconnected, I was able to get the gears working again.