FINALLY! This is a life saver of a post. I just fully upgraded to the OFFICIAL Wind Hellas 5.0.0.509 OS, and i'm with Rogers Wireless......HOWEVER..
Just FYI for people running Windows 7, make sure you check everywhere in the c:\users\USERNAME\appdata.....for the Vendor.xml file. There's another "common files" folder there somewhere and in that is the extra Vendor.xml file. Also make sure to view all hidden files, because its hidden. I tried to do a search but i didn't get any search result for "Vendor" no idea why...so just make sure you manually look and delete.
Once i finally deleted both Vendor files my BB Desktop Manager recognized the new OS 5.0..., however once i clicked next...it said no update necessary...this is why you just bypass the DM all together and just use the "Loader" app. It does work beautifully.
I had a successful install of this newest OS, and there are no flaws at all, everything works!
![Shocked](http://www.blackberryforums.com/images/smilies/icon_eek.gif)
even facebook lol another good point of this OS is that it automatically updates your programs on initial startup
![Thumbs Up](http://www.blackberryforums.com/images/smilies/thumbs_up.gif)
This Curve 8900 is running wayyyy better than on the 4.6 OS
![Razz](http://www.blackberryforums.com/images/smilies/icon_razz.gif)