Thank you for contacting the Intel Communities.
I am sorry to hear that this has happened with your Intel® Compute Stick.
I would like to recommend you to perform a BIOS recovery to the version you attempted to update to.
Here you can find the instructions to perform this task: BIOS Recovery Instructions for Intel® Compute Stick
I look forward to your outcome with this.
Thank you for your answer.
As per the troubleshooting done so far, I would like to recommend you to check with the place of purchase of your device to get a replacement (if within the first 30 days after the date of purchase).
If more than that, please contact Intel Customer Support at: Contact Support