The previous firmware was not posted to Insta360.com, but this one is:

https://www.insta360.com/download/insta360-x3?r_from=%2Fx3%2Fen-us%2Fcamera%2Ffirmwareupdate

In case you cannot update from the app, you can manually upgrade that way.

Release notes:

1. Improved system stability
2. Optimized color for both 360 and Single-Lens video modes
3. Optimized color for both 360 and Single-Lens photo modes
4. Optimized Active HDR quality
5. Optimized color for 8K timelapse feature
6. Optimized Airpods connectivity
7. Optimized image quality with Lens Guards installed

I hope this addresses some of the crashes, lockups and other odd things I’ve encountered with v1.0.00.

Please report any bugs you find for inclusion on my X3 firmware bug list.