There is currently no easy way to get a recent Chromium build on the rpib+.
If you just want chromecast you could try some projects that don't use Chromium because the rpib+ is RAM limited (limiting Chromium functionality) and has a less popular CPU architecture (limiting your install options).
If you really want a recent version of Chromium you need to find a package compiled for your CPU architecture or build it yourself. Note that Chromium builds often lack a lot of features available in Google Chrome (webRTC, pdf viewing, etc).
It appears the distributions of popular branches of linux available for the rpib+ do not have what you are looking for, but you can check all the options here.
Looking at the URL in
You can see that the official OS (raspbian) for the rpi currently has 3 versions:
- debian 7 wheezy
- debian 8 jessie
- debian 9 stretch
apt will tell you where in the repository the files are
apt-cache show chromium | grep Filename
allowing you to see what Chromium versions are available Though it looks like only v22 is available (looks like v42 for the rpi2).
Fedora does not include Chromium in the core repositories and neither does Pidora.
Arch Linux ARM only has Chromium builds for ARMv7 not ARMv6.
Raspberry Pi 2
The Raspberry Pi 2 has a more common CPU architecture (ARMv7) And you can get more recent builds from Ubuntu.
Build it yourself
Trying to build it yourself will use up all your RAM and crash your raspberrypi (256MB) but this is the method you could use in qemu or adapt to cross compile. Also note that chromium may require patches to compile and run on the raspberrypi:
#tmux new -s chromium
git clone --depth 1 https://chromium.googlesource.com/chromium/tools/depot_tools.git
nice fetch --nohooks --no-history chromium
./build/gyp_chromium -Dcomponent=shared_library -Dfastbuild=1
nice ninja -C out/Release chrome