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Impressive (even more for the geek me) but done before. Only relevant because of comparison with hellish OTA process for non-Google Android devices.

https://twitter.com/#!/search/realtime/android%20nasa%20ota

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They can even patch Voyager, now at the edge of our solar system: http://www.spaceflightnow.com/news/n1005/11voyager2/

They also patched the MER rovers many times; This bug caused quite a few headlines back in the day: http://www.nasa.gov/offices/oce/llis/1483.html

I seem to remember a Scientific American article from the 1980s where they also had to rewrite code around a dead bit in RAM. They've done some pretty drastic changes since, like using the backup computer to add image compression on the fly (lots more detail here): http://history.nasa.gov/computers/Ch6-2.html

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