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1nsane_dev's profile
Giulio Zompetti
Giulio Zompetti
Giulio Zompetti
@1nsane_dev

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Giulio Zompetti

@1nsane_dev

Collecting rare Apple devices

Milan, Lombardy
Joined December 2012

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    1. john‏ @nyan_satan 5 Jul 2020

      Then I soldered wires to them and connected to Waveshare’s STLink V2 clone. Although it’s intended to be used with STM32s only, it happily works with this NXP MCU as wellpic.twitter.com/w07LxEkLU4

      2 replies 0 retweets 7 likes
      Show this thread
    2. john‏ @nyan_satan 5 Jul 2020

      Default OpenOCD’s config for LPC1xxx sets 10 kHz tckrate, which leads to weird bugs whenever you try to access any fair amount of memory - e.g. you can read 16 bytes of memory just fine, but not 1024. And of course flashing worked neither

      1 reply 0 retweets 4 likes
      Show this thread
    3. john‏ @nyan_satan 5 Jul 2020

      I did set it to 4 MHz and then it started to work flawlessly. The cable booted in disk mode - reflashing with astrisctl and it can now be recognized by Astris itself:pic.twitter.com/JwHi8DXVBq

      1 reply 0 retweets 6 likes
      Show this thread
    4. john‏ @nyan_satan 5 Jul 2020

      Now let’s examine common problems The first one is damaged motherboard. There’re 2 broken tracks (one per side) that come from USB power of both cords. Something wasn’t powered up at all?

      1 reply 0 retweets 5 likes
      Show this thread
    5. john‏ @nyan_satan 5 Jul 2020

      Here they are already fixed with little pieces of copper wires, but you can recognize their locations anyway:pic.twitter.com/aRFRayWCgv

      1 reply 0 retweets 6 likes
      Show this thread
    6. john‏ @nyan_satan 5 Jul 2020

      Another problem is connector: 1) It’s weirdly ringed (continuity testing) with multimeter

      1 reply 0 retweets 4 likes
      Show this thread
    7. john‏ @nyan_satan 5 Jul 2020

      2) Its bottom side’s pin pad (which is meant to be connected with the port) looks recessed. Not sure you can see that on the photo below, but it is. This, I believe, makes connection between it and the female port very unstable or just not working at allpic.twitter.com/Cg0UIslcNb

      1 reply 0 retweets 5 likes
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    8. john‏ @nyan_satan 5 Jul 2020

      So, it is to be replaced. As I mentioned in my Lightning write-up, Kong’s connector doesn’t have any logic inside, as it’s handled by MCU and FPGA inside the enclosure. The pinout is written with silk on the MLB. I replaced the connector with jumper wires and a breakout boardpic.twitter.com/whK0PMC4Yd

      1 reply 0 retweets 8 likes
      Show this thread
    9. john‏ @nyan_satan 5 Jul 2020

      Now, the last problem - Kong doesn’t seem to like modern HOSTIDs (again, look at my Lightning write-up in case you don't know what this means):pic.twitter.com/RXlRhMoDme

      1 reply 0 retweets 6 likes
      Show this thread
    10. john‏ @nyan_satan 5 Jul 2020

      But that can be fixed easily by setting disableIdCheck environmental variable: astrisctl setenv disableIdCheck 1 (Only available in newer firmwares such as 0.52 or 0.49)

      2 replies 1 retweet 9 likes
      Show this thread
      Giulio Zompetti‏ @1nsane_dev 5 Jul 2020
      Replying to @nyan_satan

      where did you find this from?

      8:17 AM - 5 Jul 2020
      • 4 Likes
      • Paz Bobrov besty wxblank Ender Cypher
      1 reply 0 retweets 4 likes
        1. New conversation
        1. john‏ @nyan_satan 5 Jul 2020
          Replying to @1nsane_dev

          Impossible RE hack - don’t tell anyone: strings firmware.bin

          2 replies 0 retweets 9 likes
        2. john‏ @nyan_satan 5 Jul 2020
          Replying to @nyan_satan @1nsane_dev

          Just a joke, don’t take personally. I really did just find the string in FW image and guessed what it could mean

          0 replies 0 retweets 3 likes
          3. End of conversation

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