Just wanted to post, if you get "/usr/local/btsync/bin/btsync: line 1: syntax error: unexpected "(" after following fukawi2's instructions, it means you're not using the correct build for your device. Change the download link (http:// etc) to the ARM version, which is http://btsync.s3-website-us-east-1.amazonaws.com/btsync_arm.tar.gz That will probably do it (worked for me and my DS2112j). Cheers