My fastroad ex pro 2020 system has just started to switch off during my commute as soon as I hit a bump, the Giant store said to remove and check,wipe the connections which I did. The problem still occurred so I dropped it into the store. I got a call today saying the fix is a software update but it can’t be applied to the smaller capacity battery on the 2020 model
bad news I thought until he said Giant will be upgrading the battery to the new 500w battery which has the latest software to fix the issue and under warranty