I recently upgrade my Omnia II to Windows Mobile 6.5 from the Samsung Website.
The upgrade to Windows Mobile 6.5 for Omnia 2 is now available on the official website of Samsung in some countries. You can only upgrade your phone through the website of Samsung in the country that is your OMNIA II came from (obviously, by official ways... you can find many other ways and roms here in Modaco comunity to upgrade to WM 6.5 no matter what country your phone came from). I will explain how I did it from the Singapure website...
How do you discover what country is your Omnia II? Go in "Settings", "Advanced Settings", "System", "Version", "Device". You will see three codes: PDA, CSC and PHONE. Everyone starts with I8000 (which is the code of Omnia 2). In CSC, see if the following 3 characteres (after the code I8000) are XSO, and in PHONE see if the two characteres following are DX. If so, your Omnia II came from Singapore (as well as mine).
You can find codes for the other countries here in the Modaco comunity, but I will post some codes that I find here for help you:
Codes for CSC (the 3 characteres after I8000):
Codes for PHONE (the 2 characteres after I8000):
DX Indonesia, Malaysia, Philippines, Singapore, Vietnam
DZ Malaysia, Singapore
JA South Africa
JC Algeria, Morocco, Nigeria, South Africa, Tunisia
JV Algeria, Egypt, Iran, Iraq, Kuwait, Morocco, Nigeria, Oman, Pakistan, Saudi Arabia,South Africa, Syria, Tunisia, Turkey
XA Austria, France, Germany, Italy, Netherlands, Switzerland, United Kingdom
XB Denmark, Norway, Sweden
XC Portugal, Spain
XD Croatia, Czech, Hungary, Slovakia
XE Bulgaria, Estonia, Kazakhstan, Latvia, Lithuania, Russia, Ukraine
XF Bulgaria, Croatia, Romania
XX Austria, Belgium, France, Germany, Hungary, Italy, Spain, United Kingdom
ZC China, Hong Kong
ZH Hong Kong
The 3 last characteres in PDA, CSC and PHONE:
* Release years:
D = 2004
E = 2005
F = 2006
G = 2007
H = 2008
I = 2009
* Release months:
A = January
B = February
C = March
D = April
E = May
F = June
G = July
H = August
I = September
J = October
K = November
L = December
So, if your Omnia 2 came from Singapore you can now upgrade to WM 6.5 by the official website of Samsung in Singapure (the site is in English, and the address is samsungmobile.com.sg). You will see a large banner in the homepage saying that the upgrade to WM 6.5 for OMNIA II is now available. Click there and download the software "Samsung PC Studio". Install it on your computer ... the system will ask you what language you want to install the program, then you can choose any language you want ... then after he will ask you what country is your phone, then you have to say that it's from Singapore! After you install just connect your Omnia 2 on the computer, open the program and follow the instructions that it will upgrade to Windows Mobile 6.5 for you.
This official ROM of Windows Mobile 6.5 for Omnia 2 comes with "Asphalt 4" (a car game in high definition from Gameloft, where you control the car by the accelerometer of the phone) and with "Crayon Physics", another super cool game!
best for all!!!!