@rintaro if it worked and will give feedback, if not you need change the baud rate and try again:
![02117d7f-599d-47e3-8381-6c0adff350d9-image.png](https://navview.blob.core.windows.net/forum/upload/02117d7f-599d-47e3-8381-6c0adff350d9-image-k75l6rc9.png)
SW/Algorithm Reset generally no problem, cannot lead output data 0.
I still want to know what other actions you had done? e.g. send some commands to IMU.
for the CAL/CONF area may be already broken, but generally you cannot break it only by boot loader(boot loaderworking fine now) except some special commands received. or it can be recover well.
so i need time to find solution to recover your CAL/CONF area, working on it.
if you have other more information, pls let me know.