If you don't need custom physics and just want a quick conversion for platforms like VRChat or Webaverse, use a web-based tool.
The creator knew Avatar.glb deserved more. They summoned the ancient engine and installed the sacred VRM Add-on Inside Blender, the conversion ritual began: The Awakening (Rigging): convert glb to vrm full
In the vast digital expanse of a creator's hard drive, there lived a file named Avatar.glb If you don't need custom physics and just