Intel has temporarily pulled its just-released TRIM firmware update (02HA) and associated SSD Toolbox from their download site, following a number of reported problems with the new software. Details remain scarce at the moment, but according to several posts on Intel's support forums, users are left with a disk read error and no way to load Windows after rebooting from a seemingly successful firmware upgrade.
The company gave its official statement on the matter to Engadget, claiming they are investigating and working toward resolution. Although some say they have had no problems whatsoever, and in their tests both PC Perspective and Legit Reviews were able to confirm the claimed speed gains, you should probably hold off on updating your X25-M drive until Intel works out all firmware defects – again.