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== MN102 Serial Writer ==
== MN102 Serial Writer ==
If you Google on "MN102 Datasheet" for long enough you will find references to a debug interface called a "Serial Writer". This is the interface used by 9 & 6 wire mod chips to patch the drives firmware.
If you search "MN102 Datasheet" on google and scroll for long enough you will find references to a debug interface called a "Serial Writer". This is the interface used by 9 & 6 wire mod chips to patch the drives firmware.
It looks as though Matsushita tried to disable this interface in the D2C and newer drive controllers. A clock glitch allowed mod chip vendors to defeat this protection and use the "Serial Writer" to inject firmware.
It looks as though Matsushita tried to disable this interface in the D2C and newer drive controllers. A clock glitch allowed mod chip vendors to defeat this protection and use the "Serial Writer" to inject firmware.