Thanks for your answer, it finally wiped OS from my Blackberry 7290 and now it has an icon with this image of some circle and inside looks like a desktop and all over its crossed bellow it has number 507.
Now please excusse me for my ignorance. I went to Cingular and downloaded 4.1 application loader. How I install 4.1 OS on my blackberry?
I connected USB to my blackberry and application loader connected to blackberry without any problem and this message shows:
"No system software was found for your device.
Contact your system administrator or service provider
for information on obtaining device system software."
What I should do? Please help.
Thank you very much for your support guys!