All up to date info is known by these guys. Give them a call:Does anyone know of badass dongles or any other are working with Gen 4 Bosch?
looking around there are a few reports of risk of 503 error,badass dongles still work on gen 4 the only problem you will get is if you get a dongle that is wired in to the motor a future update could stop it working.
nolooking around there are a few reports of risk of 503 error,
would this be a risk with 4 gen on
A) buying new
B) updating the firmware
( is the firmware only updated by taking to the bike shop?)
if there is 503 error will the bike stop working, read that it can happen up ro 3 times before needs factory reset?