nokia 6670,kill 100kb limit mms sending ?

[insomja]

hi there,
does anyone know how to remove the silly 100kb limit from my nokia
6670(ser.60 v2/symbian 60 os7)?
i tried it with FExplorer 1.15,but trying to open files that seem responsible
for that mischief there´s message "FExplorer unknown format,cannot
open..."
nokia tells the limit is there to make mms compatible to other phones

if someone can help i´ll wash and kiss his/her feet
best whishes
j