This whole update was horrible. The so called /update command failed to update from the latest version to v2, opencode upgrade also kept failing. I had to manually install it via NPX, and even then it kept hanging trying to start the background service. However after all these issues I believe the new changes are quite nice.

fyi, there are more breaking changes than listed there, as well as a serious security regression

https://github.com/anomalyco/opencode/pull/51337