Originally Posted by anar_baku
Can you please explain the exact process you followed. I am having the exact same issue as you did. I delete the Vendor.xml, then use the Loader.exe to try to upgrade the OS. However, the loader doesn't seem to recognise the new OS. I also tried to uninstall the Desktop Manager and installed version 5.0.1 as you suggested, still no joy.
The process that I followed is I deleted ALL Operating Systems
(including Blackberry Operating Systems that are not related to the 9700). Delete the Blackberry Desktop Managers and Blackberry Updaters (use your Windows Control Panel to remove everything).
Install the Blackberry Desktop Manager 5.0.1, but do not open.
Install the Blackberry Operating System 220.127.116.116/18.104.22.1682
Plug your blackberry into the USB and open/run the Blackberry Desktop Manager.
At which point, I cancelled any synchronization and let it check for application upgrades. The DM automatically detected the new operating system and the upgrade was completed. NOTE
: I tried the same process to update my Blackberry 9000 Bold and that failed so it may have just been pure luck.
Best of luck to you,