As such, this content after start-up can serve as a unique fingerprint, which can then be used as a key to protect an encryption key or to protect a memory.
Nothing fancy is running yet, all they've achieved so far is a proof of concept that they've bypassed the Wii's protection with some encryption codes they swiped from the Wii's memory.
Data fades from memory much more slowly when chips are cold which allowed them to grab the encryption keys and speed up unscrambling the contents of a phone.