Apple to Replace Failing MacBook Air SSDs for Free, Test with Firmware Update
Apple has issued a firmware update (version 1.1) that will let you know if your MacBook Air's storage might be affected. Unfortunately, there doesn't exist an update that will fix the problem, but if you happen to have one of the small number of wonky SSDs, Apple will replace it free of charge.
The issue affects certain 64GB and 128GB SSDs used in the previous generation of MacBook Air systems powered by Ivy Bridge and not the most recent models based on Haswell (which we also reviewed).
Should you be one of the unlucky ones, Apple strongly recommends avoiding any OS system updates or new applications. Apple also says you should back up your data on a regular basis until you receive a replacement drive. For more information, visit Apple's Support Page.