I did it!!!
Thanks a lot!
Here is how:
I started with fw 4.40
I started downgrading with fw found on
Using Webupdater I could only go until 3.80.
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So next thing was to get the RGN_tool found from turboccc and compiled Fa_Piter's modified gcd file(See Post #7) to 156201000310.rgn
I Ignored my antivirus program for this step.
In order to use updater I had to go to preboot mode
With the device turned off I pressed and Hold down Powerbtn and didnt let it until I had inserted the USB cable and updater was functioning.
Updater started the update with success(The only strange thing is that I am sure I read 3.20 despite loading 3.10)
Again thanks to everybody who helpded me out in this.