Thanks for your support!
Before updating, I would highly suggest making a backup of your project, just in case something goes wrong.
Then download the zip file and unzip it. Next, delete the Twisted IK 2 folder in your Godot project in the plugins folder. Then take the Twisted IK 2 folder from the zip and place it into the plugins folder in your Godot project. Then you will just need to close the Godot editor (if it’s open) and reopen your project and then it should be updated! You can check if it’s updated or not by seeing it “Twisted_PhysicsBone2D” shows up in the new node menu.
Let me know if what I wrote does not make sense or if you have any issues and I’ll do my best to help!
Also, on a slight aside: I updated the utility script that sets the magnet position for FABRIK, as how magnet positions are set changed slightly to fix the bug where it would give different results when rotated. The example development project contains the new script in the utility scripts folder.