I have an Acer Revo3700 (ION2) HTPC. I have tried to upgrade from 8.0.2 (which runs perfectly) to 8.1.0 and have been unsuccessful. The update starts and completes as normal and the system reboots. On reboot I get an onscreen message stating: "XZ-compressed data is corrupt - system halted" and the system has frozen. As a result I created a USB stick with 8.1.0 to try a fresh install however I got the same error message after booting from USB. I was unable to even start the install process.
As I have been unable to install 8.1.0 I did a fresh install of 8.0.2 using a USB stick and that installed as expected. I also then as a final check tried to update to 8.1.0 from within this fresh install and that also appeared to complete successfully but I was left with the error message screen as described above after reboot.
Any help would be greatly appreciated.