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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 19 Dec 2020
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      Message to the iDevice jailbreak/security/repair communities: Y'all kind of suck at this whole documentation thing. Message to everyone else: don't worry, I'll be publicly documenting everything I find.

      6 replies 11 retweets 173 likes
      Show this thread
    2. Hector Martin‏ @marcan42 19 Dec 2020
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      Like I just wasted 45 minutes looking into a "magic" iDCSD "serial" debug cable for Type C iDevices, only to conclude after finding clear photos that it's a standard USB3 Type C cable. With an FTDI on the USB2 pins driving 3 LEDs. And the UART pins disconnected.

      2 replies 1 retweet 47 likes
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    3. Hector Martin‏ @marcan42 19 Dec 2020
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      None of this is explained in theiphonewiki article for it, which claims this cable actually serves a purpose. AFAICT it's literally just a passive USB cable plus blinkenlights so that factory workers can see it light up green when tests pass.

      2 replies 2 retweets 35 likes
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    4. qwertyoruiop‏ @qwertyoruiopz 19 Dec 2020
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      Replying to @marcan42

      the DCSD has actual uart, iDCSD doesn’t (two different things). what you want is the potassium:pic.twitter.com/RRwyRgoLFN

      1 reply 0 retweets 4 likes
    5. Hector Martin‏ @marcan42 19 Dec 2020
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      Replying to @qwertyoruiopz

      No, what I want is the damn PD command it sends to switch to UART mode, so I can put it on a wiki and the code to send it in a repo and cut out all this secretive magic device nonsense. But it's okay, I have the PD controller firmware in Ghidra already.

      2 replies 0 retweets 10 likes
    6. dos‏ @dos1 19 Dec 2020
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      Replying to @marcan42 @qwertyoruiopz

      Is it tps65982?

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 19 Dec 2020
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      Replying to @dos1 @qwertyoruiopz

      Almost the same.

      11:18 AM - 19 Dec 2020
      1 reply 0 retweets 0 likes
        1. dos‏ @dos1 19 Dec 2020
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          Replying to @marcan42 @qwertyoruiopz

          Do you know how is that UART wired to it? LSX_P2R/LSX_R2P?

          0 replies 0 retweets 0 likes
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