135w ago - A few days back we reported on the PS JailBreak Downgrade file leak, and today Hansi of PSXCare.com (linked above) has followed up on some previous work and shared a video of a PS3 downgrading with PS Downgrade and a Beagle 480 USB protocol analyzer.
One file is a PS3Key boot, the other is a PSDowngrade boot.
The PSDowngrade is supposed to be encrypted and not "analyzeable" according to a distributor. But maybe something can be learned anyway.
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The service mode file is encrypted? Though you can never tell what a file is by it's extension, it appears that this extension is for "Microsoft Tabular Data Control". If you view it with a hex editor you notice the header of TPDC, so not sure what that is.