Upgrade XPEnology (DSM) 4.1 to 5.0 on HP N36L

my record on upgrading from 4.1 to 5.0

reference:
http://xpenology.com/forum/viewtopic.php?f=2&t=2545&sid=0f7982671cc3d6d24fff07c2e6cd9cfd
http://xpenology.com/forum/viewtopic.php?f=2&t=17
http://cyanlabs.co.uk/news/install-xpenology-on-the-n54l-without-esxi
http://blog.sina.com.cn/s/blog_72d41f850101r46s.html

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 the *.img file and destination usb device, then press write.

*-ext2.img if you read/write in linux, otherwise *-vfat.img across multi-platform. -vfat.img modified time looks incorrect, but after image was written, its zImage modified date is 2014-04-04

Step 4: boot-up

(if applicable) connect VGA cable and keyboard to N36L
insert USB drive, boot up N36L (config BIOS if USB not 1st boot device)
select “gnoboot.me” in GRUB menu > “gnoboot-5.0-4458”
wait a while until “DiskStation login:” displayed

use Synology Assistant to lookup new IP address, double click to open web interface

Step 5: installation

follow on screen instructions, uploaded the downloaded DSM_DS3612xs_4458.pat

at the end, a warning will be display, about permission or serial number error. ignore it. deal with it after boot up.

Step 6: reboot

this time, select “gnoboot-alpha” on grub

It takes quite a long time for upgrade script to run, be patient and don’t panic.
At this moment, set static IP on router for new MAC address (screen from Synology Assistant)

When “DiskStation login:” displayed, new 5.0 can be used

Step 7: update and grant permission

Control panel >User, grant admin with all read/write access. re-create user if any.

Go to File Station > usbshare1 > boot > grub > meun_alaph.lst , right click, open with Text Editor

change from “kernel /zImage” to  “kernel /zImage sn=B3JN12345”

Control panel > Update and restore > Download, click “Download” button
update 2 is important for OpenSSL bug (Heartbleed). Yet, meaningless if it is a home network though

ssh to Diskstation, as root, run

then go back to web interface and click Update once download finished. System will restart