One little snag, the Odroid-C2 being 64bit, is ahead of the pack (most if not all other singleboard's, including the Pi 3 are 32 bit still). So, when trying to follow the Official Instructions to install BTSync, I got this error:
W: Failed to fetch http://linux-packages.getsync.com/btsync/deb/dists/btsync/ InRelease Unable to find expected entry 'non-free/binary-arm64/
Packages' in Release file (Wrong sources.list entry or malformed file)
Unfortunately, BtSync doesn't yet provide a Arm64 binary, and, since its not open-sourced, you can't try and compile one yourself either.
Not to worry. Armbian/Debian provides an easy enough way to install and use the 32 bit binaries and run them in your 64bit Armbian OS.
First we enable armhf multi-arch support in the package manager:
sudo dpkg --add-architecture armhf
sudo apt-get update
Then we fixup the /etc/apt/sources.list file to explicitly limit BtSync's repo to armhf architecture. If you followed the official instruction, then a line like this got added to /etc/apt/sources.list.deb http://linux-packages.getsync.com/btsync/deb btsync non-freeChange it to this:
deb [arch=armhf] http://linux-packages.getsync.com/btsync/deb btsync non-freeRe-run apt-get update so package manager becomes aware of those changes:
sudo apt-get updateNow you can do everything else as per the official instructions. E.g.
sudo apt-get install btsync
