[Q] About Freeland PD10 3G

Hello all ;

I have a tablet pc call name freelander PD10 3G

1gb of ram
1ghz mtk6576
B/g/n wifi
Internal bt
Internal gps
Dual sim card. I for 3g Internet & calling
7" touch screen
8GB internal storage
16GB ext sdcard



Android is 4.0

Work perfectly ;

I change many thing like imei...
I have root it

So is there any upgrade or custom rom to android jelly been?
Is there any mod /tweek/more menu in setting like cpu..... I?

how I can dump current firmware?

How I can increase storage for app ; only 512mb?