I have installed the 360th. Looks absolutely similar to 351 (including all applications and languages; it`s not a chinese version).
- the Quadrant score is 775
- OOVOO doesn`t start automatically
- GingerBreak 1.2 installed, but no SuperUser and no root !!!
- SuperOne Click also doesn`t help with root
(reminder) before returning to 351, it`s necessary to downgrade the recovery version.
I believe that the package installer utility included in stock roms is what does it. It marks itself as able to run pkgs files and will prompt you if you try to run an update pkg. (same way gallery can run jpgs/pngs/etc)
Clicking the download link is the simplest way of running a pkg, you could also try using a file explorer and selecting the pkg
Assuming this works, you of course need the correct stock recovery installed, basically any 00 region one in the case of 360