my record on upgrading from 4.1 to 5.0 reference: Step 1: download gnoboot-alpha10.5 get it on http://www.gnoboot.me/ > Downloads > gnoboot-alpha-lastest-mirrorX extract password: 6n0boot-AlpHaTen.5 Step 2: download DSM 5.0-4458 from Synology website http://global.download.synology.com/download/DSM/5.0/4458/DSM_DS3612xs_4458.pat for release notes or China mirror site, go to http://www.synology.com/en-us/support/download/DS3612xs#download_tabs_dsm Step 3: download & install Win32DiskImager http://sourceforge.net/projects/win32diskimager/ -> download and install select …
