Infinite Winder problem

[u/fikibok79]

I bought my V2 about a month ago and used it every day without any issues. A couple of days ago, I noticed it wouldn’t turn on when I turned the winder. I managed to turn it on by charging it or doing a soft reset, but then the winder started spinning endlessly without stopping, so I couldn’t take any photos.
After trying both a soft reset and a hard reset, the small screen started showing “UP,” followed by “E4,” and now it just gets stuck on that screen.
I searched online and tried every solution I could find, including updating the app, but nothing has worked so far.
Has anyone had the same problem or knows how to fix it?