Yes, this is a good idea.
He tells me to follow this guide:
https://jadefw.blockstream.com/upgrade/fwupgrade.html
My thoughts are: would you relay on a faulty piece of hardware for a critical function as storing your precious coins?
If having a new device shipped to you is not such an hassle, I would avoid using that particular pice of hardware again.
Of course, having fun thinkering is part of the game, but I wouldn’t find it funny having that problem again.
Yes these thoughts are the obvious ones, I am having them myself too.
I don't use the Jade very much, so I don't really worry about using it, if I fix the issue myself.
I will follow the guide. Thanks a lot.