4sns error TmOP - Google Search: "I just ran the hardware test and and it showed the 4SNS/1/40000000: 'TmOP' error. I ran the test once more in extended testing and"
Apple - Support - Discussions - Is my Mac broken ? ...
4sns error TmOP site:apple.com - Google Search
but no clear answer
Digg - Apple Fixes Firmware, Leaves Users Confused: "on 10/12/2007
I agree with the article in that Apple will release Firmware updates without actually saying what the upgrade fixes. What the hell is the point of doing that?"