Downgrade IQ Firmware

[vvulture]

Hey guys,

A few years ago i purchased an IQ unit and installed it in my SS-V Series I Wagon.
As part of the install process, the firmware was flashed to latest version available at the time.

Little did i know that this firmware would affect the sound of the unit to the point where there is almost no bass.

I've just recently received a company car.. A Series II Omega wagon. The IQ in that car sounds WAYYYYYYYYY better than my SS-V.. I'm guessing its still running an older firmware.

Anyway, is it possible to downgrade the IQ firmware in an effort to get decent sound again ?

[Ryanvkzf]

Sorry if this has already been asked..have my hands on a psp, however it has the latest firmware..any way to downgrade safely via a usb connection?