this error shows on my screen and i've tried everything i can think of even hard reset but still doesn't work

error:

i cant post the link coz i dont have up to 10 posts any way theres a rectangle with 3 shapes inside(a circle, square, and triangle) then around the rectangle is a circle with a line across it, and finally the number "507" below it

HELP!

The "507" indicates that there is no Operating System on the BlackBerry. Here are the steps you need to do:

- Download the latest 7280 OS (same as the 7210 and 7230 - but not the 7290) from your carrier
- Execute the program you just downloaded
- Locate and delete VENDOR.XML on your PC C: drive
- Restart Desktop Manager

Good luck!

thanks, but is it mandatory to get it from the vendor? bcoz i have t mobile and 7280 is not a t mobile phone(unlocked/bought on eBay)

It doesn't matter which version you use. Find the latest one and use it.

it still didn't work, what am i doing wrong?

What have you done so far. Step by step please.

first i downloaded 7230 update from t-mobile website

installed and ran it

deleted vendor.xml

ran desktop manager again

When you restart Desktop Manager does it detect your BlackBerry?
It's definitely a 7280, right?

yes its 7280, and im not sure if it detects it nothing happens when i open it.

PS when i put the mouse on the icon on the taskbar it says Disconnected-desktop manager

In DM, go into Help / About Desktop Manager and click on the Device Software tab. Is it showing the 7230 software installed?

Close down DM and make sure VENDOR.XML is gone please.

after going to help/about nothing is displayed in the handheld software window

Then the handheld software is not installed on your PC.
Are you sure you downloaded the Handheld software - and not just Desktop Manager?

i think i downloaded the desktop manager only, where can i find the software?

Handheld software should be in same location as where you got DM software if not mistaken you said TMO, you should find it there then. Hope you get this resolved!!!

thank u guys so much i've resolved the problem. I found the software on t-mobile but kept downloading DM instead of the software itself