Comment 63 for bug 1449005

Uwe: No, Windows will not update the SSD firmware by itself. Samsung has a windows application for updates, but it has to be downloaded from Samsung and executed.

You really should update the firmware though. I also bought my 840 about a year ago and before updating the firmware noticed severe performance degradation and a few corrupted files. Performance according to "hdparm -t /dev/sda" was down to 60 MB/s. After the firmware upgrade performance was restored to 516 MB/s.