i just found this article.., if this (below) is correct i expect not to get a
responce and will be left wondering why do we have this service in device
manager [update driver] that misleads us? or is this for the [windows only
drivers] and i wasted time while answering my own question.
To update a driver, you'll need to retrieve it from the device maker's Web
site. Most peripheral makers have a support or customer care area on their
Web site that contains driver files. Drivers also come on floppy disks or CDs
that you have got with the device. Still, it is better to get the latest
driver from the device manufacturer's Web site. If you need help in finding a
driver, look at these sites: driverguide.com or windrivers.com or
driverzone.com or drivershq.com or perhaps mrdriver.com.
Before you find the right driver, you'll need to figure out the make and
model of the device you are updating. This usually isn't hard. You will most
often find this information in the manual of the device. It could be also on
(or on the underside) of the device itself in the case of a printer or
scanner and some other peripherals.