Dear customer.
Thank you for your e-mail.
The fx-CG50AU and fx-CG20AU are used in schools in
Australia only because there is an educational regulation in Australia that
prohibits some functions of calculator.
These models are arranged their specification from
fx-CG50 and fx-CG20 to be suitable for that regulation.
Therefore,Unfortunately,you cannot make changes to the
storage memory of these models.
Your kind understanding would be highly appreciated.
Sincerely yours,
Dear Customer.
Thank you for your e-mail.
As you mentioned,fx-cg20AU have designed with limitation
of the part of 3D graph function and memory strage.
However,We would like to inform you that it is the
specification of fx-cg20AU.
Unfortunately,We can't edit OS of your calculator.
In fx-cg20(not AU model),you can use these functions with
no limitation.
We are sorry for not being able to help you.
Your kind understanding would be highly appreciated.
Best regards,
