D7000 Region change from US/NA to WW/Australia

Hi

I'm trying to change the region on the Netgrear D7000
I can get it to work by the following

http://192.168.0.1/setup.cgi?todo=debug  "this enables telnet"

telnet 192.168.0.1 with usename user & password password

cd www  "changing folder to the web pages in www

sed -i 's/@wiz_country#/WW/g' *.htm   "replace are CGI lookups for @wiz_contry" to say "WW"
sed -i 's/@wiz_country#/WW/g' *.html 

sed -i 's/@netgear_region#/WW/g' *.htm  "replace are CGI lookups for "@netgear_region#" to say "WW"
sed -i 's/@netgear_region#/WW/g' *.html

sed -i 's/@h_WRegion#/Australia/g' *.htm "replace are CGI lookups for "@h_WRegion#" to say "Australia" just so the wifi region stop chnage to US
sed -i 's/@h_WRegion#/Australia/g' *.html

this will get the D7000 to think it's in australia & let my connect the  ISP's in my region & configure my wifi

but  it's only good until i reflash the firmware & then i have to do it all agian

I'm after a way to presently change it to an :WW: model