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How did Nintendo patch the RCM exploit?
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<blockquote data-quote="ZachyCatGames" data-source="post: 9220862" data-attributes="member: 452160"><p>That's not it at all.</p><p>RCM is intentionally enabled and N officially uses it at the factory and during repair, and it's suppose to be secured and does have signature checks, it's also still present and fully functional on Mariko and patched systems.</p><p>The issue is Nvidia's bootrom is shitty and the USB2 software stack has some copy operation has no limit on how much data can be copied, allowing one to overwrite some shit that they shouldn't be able to thus gaining arbitrary code execution.</p><p>This was fixed on Erista by switching the device to xUSB mode (which doesn't have the issue) via a fuse or the use of an irom patch that limits how much data can be copied, depending on when it was manufactured. Mariko always uses xUSB, so the flaw doesn't exist there.</p><p></p><p>The Gateway/TX modchip glitches the SoC during the bct signature check to trick the bootrom into thinking their own bct/bootloader is valid, it doesn't involve any recovery shit.</p></blockquote><p></p>
[QUOTE="ZachyCatGames, post: 9220862, member: 452160"] That's not it at all. RCM is intentionally enabled and N officially uses it at the factory and during repair, and it's suppose to be secured and does have signature checks, it's also still present and fully functional on Mariko and patched systems. The issue is Nvidia's bootrom is shitty and the USB2 software stack has some copy operation has no limit on how much data can be copied, allowing one to overwrite some shit that they shouldn't be able to thus gaining arbitrary code execution. This was fixed on Erista by switching the device to xUSB mode (which doesn't have the issue) via a fuse or the use of an irom patch that limits how much data can be copied, depending on when it was manufactured. Mariko always uses xUSB, so the flaw doesn't exist there. The Gateway/TX modchip glitches the SoC during the bct signature check to trick the bootrom into thinking their own bct/bootloader is valid, it doesn't involve any recovery shit. [/QUOTE]
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How did Nintendo patch the RCM exploit?
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