Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Firmware Problem

I read the reviews on Amazon before buying the Zen Micro. After just a week the unit stopped working due to a "firmware problem". The technical support could not fix the problem and I have to send it back to Creative. I did some research on the internet and apparently this is a common problem for Zen Micro. Not a reliable product. I will never buy a Zen Micro again.