i updated my 7290 to 4 s/w and now screen has a circle with computer sscreen inside, line diag across circle and numbers 543 at bottom of circle...will not complete boot...any ideas...it only 2 days old

You probably need to do a "javaloader -usb wipe" on this BlackBerry and reinstall BlackBerryOS on this.

However, Error 543 could also be caused by a defective BlackBerry. There is a listing of error codes somewhere...

Thanks for the info. I will try Wipe

wipe worked. thanks mucho!