It seems that nothing is without flaws, much less the world of technology in general, perhaps due to increasingly complex systems. In this case it was the turn of the still latest model of Macbook Air , which seems to fail on rare occasions when trying to recover from a previous system failure.
The update is reflected specifically as »MacBook Air Flash Storage Firmware Update 1.0 ″, and can be downloaded from updates section in the Mac App Store or by manual download.
Before proceeding with the firmware installation we must take into account a series of tips that Apple offers us,
The MacBook Air needs this update.
The power cord must be connected to your MacBook Air and plugged into a connected power source.
It is recommended that you back up the data located in the MacBook Air flash storage to another disk or an external Time Capsule before installing this update. If you have already backed up your data, click Install update to start the update.
Do not reset, turn off, or disconnect power to your MacBook Air during the flash memory upgrade. If there are any problems during the upgrade, the flash storage may become unusable and all data on it may be lost.
When the update is complete, your MacBook Air will shut down. Wait a minute before turning it back on.
The Boot ROM or the SMC version information after the update will be revision TPVABBF0.
The download is 1,69 Mb and we must run OS X 10.7.5 as a minimum to install it. So now you know, all those of you who have a Macbook Air from mid-2012 do not hesitate for a second in install this update to avoid further problems in the future.
More information - Issues in the latest firmware update for Thunderbolt connections
Source - 9to5mac