Well then, how about a tutorial for fresh from scratch install? I have tried your upgrade tutorial for the past 2 days and it fails everytime. I have no problems using XPEnoboot_DS3615xs_5.2-5644.5 and DSM_DS3615xs_5644. It works everytime with no issues.
I use a bare-metal install. I have 4 Xpenology boxes and all have been working fine with no issues for over a year now. I built a new box using a INWIN IW-MS04 mITX NAS case, AsRock H97M-ITX/ac mother board. 16GB ram and an Intel i5-4440.