Hello! I am also trying to crack the checksum for Pokemon Sapphire save data.
I will share my progress so far:
Every block of 0x1000 has a 16-bit checksum at position 0xFF6-0xFF7.
This checksum can be *nearly* calculated by summing up 16-bit words from 0x000-0xFF0 in the block.
This is close...
It's not the movies or games downloads that I would worry about, like breaking into networks, downloading encrypted things, spying on network traffic. I have seen so many "Top Secret" seals on files when I was a kid
I was obsessed with finding UFOs, a surprising amount of US files where stashed on computers in other countries, China back in the early 90s omg sooo much