I have a laptop and it's got no serial ports! I bought a USB to setial cable and I need to know whether I can use this cable to upgrade the software or not?
yes you can now all you need to do is you have to find out USB to setial cable wich usb u enter on ur laptop ex:if you have 4 usb on ur laptop side usb are wil be rate com 5 or com 4 or will be com 9 or com 11 to make them com 1 flow this steps....
start--control panel --system--hardware--device manager--go on the ports(com-Lpd)click over there you will see working ports
now enter ur cable to usb port on ur laptop(make sure u install the driver first for that cable)
should be there same thinl like this Prolific USB-to-Serial Comm port(ex:com 8) ok ..go on it and double click with ur mouse at the new window u will se at the top Port Setting click--Advanced---Com Port Number change to COM 1
than ok--ok again exit the device manager resart the laptop should be ok now...