can someone help me convert Panasonic TV model TX-32LMD70A UK standard Pal I to

[jagbogah]

Hi, can someone help me convert Panasonic TV model TX-32LMD70A UK standard Pal I to Pal b/g standard?.
I am able to convert these UK models By editing hex file in service mode.
TX-32LXD85B
TX-L26X10B
TX-P37C10B.
As for this model TX-32LMD70A I could do that by downgrading it current firmware from V5.570 to V2.020. But i do not know how to do that.
Pls can anyone there help me in anyway to fix it.
Thanks to you all.
 
Joseph