Apple has released MacBook Air Flash Storage Firmware Update 1.0 for MacBook Air models released in the middle of 2012. The release addresses a rare problem that could cause a system to fail to recover from a crash. As always with firmware updates, we recommend relying on Software Update or the App Store app to ensure you get the firmware update for your specific model, and being careful not to interrupt the update process. Apple also notes that your MacBook Air will shut down after the update is complete, and that you should wait one whole minute before restarting it. (Free, 1.69 MB)
Improve Apple Services with AirPort Base Stations
You can make iChat file transfers, iDisk, and Back to My Mac work better by turning on a setting with Apple AirPort base stations released starting in 2003. Launch AirPort Utility, select your base station, click Manual Setup, choose the Internet view, and click the NAT tab. Check the Enable NAT Port Mapping Protocol (NAT-PMP) box, and click Update. NAT-PMP lets your Mac OS X computer give Apple information to connect back into a network that's otherwise unreachable from the rest of the Internet. This speeds updates and makes connections work better for services run by Apple.
MacBook Air Flash Storage Firmware Update 1.0
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As an aside, I tried to find the history of updates as I would have in the "old days" (e.g., Lion and earlier) when another tab in software update would reveal each one going back a long way, perhaps to the last (maybe only) "clean install."