Here is the Software collection pack that updates the firmware of different Mobiles. I have received from the mobile repaire shop. So No Doubt about the workings as they use this. I dont know the full usage of every make but you may need this. Experiment only on those mobile that is in warrenty PLEASE for first time. Please Share ur Experience with others including me.
Nokia,LG, Samsung, Sagam,Sony, Sony Erection, Bleu and lots more..