There's a lot of hash checking going on in the 721, and there's a new bootloader each time they've ever upgraded the software to match the hash of the new software updates. It also self-destructs and reloads on anything it doesn't like seeing.

People have hacked the boxes to get a web server on them before and things like that, but any information I've seen was pretty limited in abilities.

I believe It's just based around an off the shelf AMD Geode X86-ish processor. The Geode is basically a continuation of the platform that Cyrix made back in the day.

As it goes I'm rather disappointed my 721 I can't even use as a sat box anymore. I'm glad I have a spare 311 in case my 722 goes tits up.

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