Is it right that new Rigol firmware is unhackable? I saw it on Dealextreme.
If it is "unhackable" don't worry too much.
They used to think the PS3 firmware was unhackable, or the Sony PSP . Each new "unhackable" update of the PSP firmware was hacked.
So just wait, if someone wants it badly enough, they will hack it. Then, you will have it too.