That's a very dangerous thing to do. Things like the channel redundancy modes may appear to work, but you risk that they ST-16 switches channels and the H just doesn't know about it.
It was actually posted as a fix in another thread on the forum. Only the autopilot has been set back to 1.29. I do tower inspections and need to be over 400 feet on a weekly basis. According to Yuneec as of today they know nothing about this issue and although I originally called them two weeks ago they have yet to follow up with any sort of fix. For anyone that does not have a need to go over 400, they are fine. For the rest of us, we are stuck until they admit the error and fix it.