i have a macbook air from 2007. How do I update to os 10.12?

re: silverbills..

First MacBook/Air was introduced by Steve Jobs @ keynote

address during Macworld conference January 15, 2008.

El Capitan 10.11.6 is latest upgrade for 2009 MacBook Air..

One Apple source does not show earlier build years.

Learn how to use these tools to identify your Mac.

https://support.apple.com/kb/HT201581

• MacBook Air - Wikipedia

https://en.wikipedia.org/wiki/MacBook_Air

Use 'About this Mac' from main Apple Menu to find most info about that build model MacBook/Air.

There aren't any 2007 MacBook Airs. Click here and see if your computer meets the requirements; the upgrade is available here.

(205002)

There is no version of MacBook Air from 2007, so you may need to check the actual version. However, a model that is near 14 years old will most likely not be able to update to Mac OS 10.12