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While I can't find the reference, I remember reading about how Apple set up their connection to the modem in a very particular way to where it has its own co-pr
by judge2020 5y ago
While I can't find the reference, I remember reading about how Apple set up their connection to the modem in a very particular way to where it has its own co-processor for any code it needs to run, and the bridge between it and the main SOC is just IO for rpc and network access.
- astrange 5y agoWell, the baseband always was its own processor - that's why it's a separate thing called a baseband. What you're thinking of is an IOMMU, it's like a firewall that prevents coprocessors from reading all of RAM. If there are vulnerabilities on the AP (main processor) then you can hack it from the baseband, but also from the bluetooth or WiFi chips.