Originally Posted by
tempocyclist
I had 10-speed Ultegra Di2 for almost ten years and never updated the firmware. It worked, so I left it well alone! 😂 I have kept my newer 11-speed Di2 firmware up-to-date though, for no particular reason. I'm not even sure what the many firmware updates have added or fixed...
EDIT: Did a search. Firmware update notes can be found here: https://bike.shimano.com/en-US/e-tub.../firmware.html
Interesting! Thanks for sharing this link. I did not have any of the issues outlined so far.
I didn't really update my previous gen DI2 neither. Once a year when I stored my bicycles for winter, I plugged them into my computer and did that. It's a lot easier now with the 12sp Bluetooth connection, but it's still a PITA to update the shifters for some reason. It's probably because they don't have the required hardware integrated in them as a result of an engineering thing or because it's more cost effective.