My device is the Xiaomi Redmi AX6S. I previously updated to 24.10.4 via ASU and it worked fine. However, when I tried to update to 24.10.5 using the same method, I couldn’t do it.
I also found that I can’t flash any other firmware at all—not even with force flashing.
After flashing, the router just reboots as normal, but the system files don’t actually change.
Saving configs and installing new packages works fine.
I think I finally understand why this happened — when I was using ASU on my phone, I accidentally swiped up and tapped the '×' on fitblk. What a coincidence