water damaged y300, need to get back to stock!!

[Guest pinky0978]

Hi all, my phone got dropped in a sink full of soapy water! Successfully dried it out but it has washing up liquid residue inside the screen and the main speaker just makes crackling noise so I can't hear calls etc. I have geek squad insurance from cpw but need to revert back to as close to retail as possible. Does anyone know where I can download the firmware update.app that ships with the phone? I still have bootloader code so no issue re locking. Thanks in advance