I bought a 2016 Orbea with Ultegra Di2. It has the junction box under the stem and a seat post battery. It’s worked great since I got it.
Well then I discovered if I upgraded my battery, I’d be able to install firmware updates that would give me shift modes, etc.
So I bought the updated battery and the in-line Bluetooth module to be able to connect to my phone.
I installed those items today and got my phone connected, no problem. The Shimano app showed that all my components were up to date, but showed a firmware update for the BT unit I just installed.
I let that update run, but when I checked my phone after a bit it said “update failed” and my phone was disconnected from the bike. I also couldn’t get any lights on the junction box to turn on when I pressed the button, so I figured the battery died mid-update.
I removed the BT module from the system and just connected everything back like normal. I let it charge for a couple hours and the light on the charger went off, indicating the battery was full.
I still can’t get any lights to turn on on the junction box and the shifters do nothing. Like the system is dead. Attempted a reset by unplugging the battery for 10 mins. Still nothing after plugging back in.
I have no experience with these systems, I hope it’s not totally dead. Any advice?
Thanks!