How to install it? Do I need to disassemble device? Can LEDE be installed over webui or ssh?
Not much info available on this device.
Some basic installation instructions: https://git.lede-project.org/?p=source.git;a=commit;h=dc7efaefb53d4671893add07934839eb8d44934d
YES, I was able to install it successfully! You need to write image directly to hardrive, I tested with a big capacity drive (more than 3Tb) and worked just fine, you just need to use gdisk to create GPT partition table using layout of MBR and add a third partition on remaining free space for data.
Related link: Lede on MyBookLive Single