From Hello Raspberry Pi:
To install Chromium OS for Raspberry Pi 3 is very straightforward:
– Visit http://www.chromiumosforsbc.org/, download the latest version for Raspberry Pi 3; CHROMIUMRPI3 0.4 “Lenny Bruce” currently.
– Unpack and write the image to SD Card using Win32DiskImager.
– Boot-up on Raspberry Pi 3.
Install Chromium OS for Raspberry Pi 3 on SD Card
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