Maybe forumer went to wrong folder or never plug in BB device yet for the BDM to recognise and generate the vendor.xml file

Maybe...

what ever it is, just delete the vendor.xml if the file is there before upgrading.

Install handset software

Now that you’ve installed the Desktop Manager and Handheld software, you’re good to go. If you’re a Mac user, you can use the device update feature in the software, but you aren’t going to be able to roam between carriers and get the latest software. As of writing this, it’s still better to be on a PC, or use a virtual Windows service like BootCamp. Double click on the .exe Handheld Software file and install it to your PC.

Plug in your BlackBerry via USB, launch the desktop software and Desktop Manager should detect that your device is able to be upgraded. Just follow the wizard that pops up, and the Desktop Manager will back up all of your contacts and emails, wipe your device, install the new operating system, and restore your data from backup. Keep in mind this process will reset many of your applications, so you might have to put in activation keys and the like back in once everything’s done.

Be warned, however, that not all developers are as quick to patch up their software as you are to upgrade yours. Any third-party apps that you had installed might not be designed for the new operating system, so you may need to pick up a newer copy if it’s available. By the same token, a new operating system could also open up some software designed to take advantage of the new features or layout.

Been having any problems with your install? Leave a comment here, and we’ll do our best to fix the issue. Also, we’ll be updating the guide as new operating systems come out, complete with the freshest download sites.

I face the same problem too, but mine is because of the antivirus software, try to modify your setting on the firewall, the nrestart your computer, then try to connect the BB to your computer, it should worl this time. Good luck!

Thanks for sharing, so in future 9800 owner should aware this when connected to Desktop Manager...

Did u disable the windows firewall too?

I think this is what mean by "eolmanagement" disable it and it can connect smoothly...

Yeah ok got it.

Give as try as Im not using 9800 so I dont know it works or not???

guys curently my os is 5.0.0.462
i got error when upgrade my os into 5.0.0.822 for my 9000

it when i wan upgrade got this error :-

" There was an error updating your software"
one or modules could not be resolved.

what happen guys?

Its a line problem... Try again later...

it happens to me too few times ...almost give up...but now success already hihih

Updating OS need a strong internet connection bcoz it need to download OS from server...

Updating from the phone itself u mean?

I meant by PC/Laptop...

we cant reli update by air right?

No you cant.. Only through Desktop Manager or BlackBerry Master Control Program...

Done..finally I can update my Os to 5.0.0.822
Its not line prob..its dm prob..I update my Os using loader.exe n it works n easy..

Haha.. Congratulation on your new OS