Odd-it just worked for me, but here is the topic
OH3 and OH4 are the same as far as the process.
OH4.1 is currently not the “stable” release. To get the latest milestone (M4), you would need to choose “testing” in openhabian. I’m guessing you are still on 4.0.4.
Another option to consider if you don’t mind waiting is the OH4.1 “stable” is due by Christmas.
It also possible to just upgrade the Zwave binding, but sometimes that doesn’t work. The procedure for that is under Bundle Management in the docs. The latest Zwave binding is here. openHAB-ZWave [Jenkins]