In this case if you Intel® Compute Stick do not work anymore after trying to upgrade to Windows 10 you can submit an online service request to get a warranty replacement here:
Please be aware that to upgrade the ICS to Windows 10 it is required to update Windows 8.1 first with all the updates available and it is required to have a BIOS version later than 0024.
You may see some information about this issue here:
I just tried the online support. I get this reply:
Announcement: Intel Customer Support Service Request Management is unavailable. We are actively working to resolve the system issue.
We apologize for any inconvenience this unavailability may cause and appreciate your patience during this maintenance.
a couple days ago Intel replied to my messages and looks like the problema maybe solved. they are gonna send me a replacement. im waiting for dhl to know when they are coming to pick up the wrong one. not sure how goes the process, but at least had an answer from Intel. lets see how long takes. thanks.