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whitequark's profile
whitequark
whitequark
whitequark
@whitequark

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whitequark

@whitequark

http://whitequark.org  · http://llvm.moe  · http://powerlinesinanime.tumblr.com  · working on quantum computers for a living · DMs open · she

Joined July 2010

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    1. whitequark‏ @whitequark Sep 26

      hey folks. i... i just had my first time. i liked it a lot. and i think i found my true love. bga packages are awesome and easy to solder and reball

      9 replies 8 retweets 95 likes
      Show this thread
    2. whitequark‏ @whitequark Sep 26

      i desoldered this flash a while back to map out the testpoints (https://lab.whitequark.org/notes/2018-09-17/game-boy-advance-cartridge-smc805-2/ …) and i just reballed it and soldered it back and it worked basically the first time. (i had to heat it up the second time because my flux gel is a very gnarly, very not bga ooze)pic.twitter.com/qL3EGPBAGF

      4 replies 4 retweets 44 likes
      Show this thread
    3. whitequark‏ @whitequark Sep 26

      until now, the only thing that prevented me from disassembling and reverse-engineering literally everything i meet was that i couldn't put anything with bgas back. now... now i am unstoppable!! INFINITE POWER HAHAHA

      2 replies 6 retweets 78 likes
      Show this thread
      whitequark‏ @whitequark Sep 26

      dead phone and i need data? get new phone, swap the flash. have a laptop and don't want to bother binwalking bios update? desolder the flash and read it. don't know where the testpoints lead? i can just take off every large ic on the motherboard no big deal incredible

      4:17 PM - 26 Sep 2018
      • 1 Retweet
      • 30 Likes
      • Luke Valenty tesnos6921 Piotr Esden-Tempski m4c0 Arsenio Dev af SΞbastien F4GRX Roman SPb Jamie
      5 replies 1 retweet 30 likes
        1. New conversation
        2. J.R. Raith‏ @jrronimo Sep 26
          Replying to @whitequark

          Hey so I've got this PS3

          1 reply 0 retweets 0 likes
        3. whitequark‏ @whitequark Sep 26
          Replying to @jrronimo

          it isn't cost effective to mail it to me but you could bring it to any phone/laptop repair folks or do it yourself! i believe in you

          1 reply 0 retweets 1 like
        4. J.R. Raith‏ @jrronimo Sep 26
          Replying to @whitequark

          I'm not sure I'm quite to BGA levels yet, but thank you for your faith! Perhaps someday. :D

          1 reply 0 retweets 1 like
        5. whitequark‏ @whitequark Sep 26
          Replying to @jrronimo

          i literally watched one 20 minute tutorial on youtube and got it working the first time. i'm not even that good at soldering and my hands shake

          2 replies 0 retweets 1 like
        6. Paul McMillan‏ @PaulM Sep 26
          Replying to @whitequark @jrronimo

          I learned a while back that alcohol is literally a performance enhancing drug for soldering tiny things and fixing hand shakiness. The trick is to put down the work after the soldering is done and not apply any power till you've sobered up.

          1 reply 0 retweets 4 likes
        7. whitequark‏ @whitequark Sep 26
          Replying to @PaulM @jrronimo

          lol. in my case, alcohol only makes me less near-sighted... which is actually a substantial issue with soldering and why I won't get LASIK. i don't get literally any other effects. i don't get dumber or like more aggressive or less shy or anything

          1 reply 0 retweets 3 likes
        8. whitequark‏ @whitequark Sep 26
          Replying to @whitequark @PaulM @jrronimo

          i mean, i imagine my reaction time slows down enough that i won't attempt to drive obviously, but i have never actually noticed it, not even in first-person shooters

          1 reply 0 retweets 2 likes
        9. Paul McMillan‏ @PaulM Sep 26
          Replying to @whitequark @jrronimo

          Huh. I'd be curious about doing accerometer measured steadiness tests. For me, 3 shots, 30 minutes, is a recipe for "can successfully solder two sizes smaller when using the microscope"

          1 reply 0 retweets 2 likes
        10. 1 more reply
        1. New conversation
        2. mikeymikey‏ @mikeymikey Sep 26
          Replying to @whitequark

          > dead phone and i need data? get new phone, swap the flash* *except on an iPhone but I'm guessing that's not your platform choice anyways 😄

          1 reply 0 retweets 1 like
        3. whitequark‏ @whitequark Sep 26
          Replying to @mikeymikey

          yeah and i'd store fde keys offsite anyway

          1 reply 0 retweets 0 likes
        4. mikeymikey‏ @mikeymikey Sep 26
          Replying to @whitequark

          Yeah, Apple just finished moving their latest generation Mac storage keys to their Secure Enclave in the iMac Pro and MBP 2018. Now it doesn't matter if you extract the flash and have any recovery keys backed up. If it's not the same SEP, nobody is reading that flash.

          1 reply 0 retweets 0 likes
        5. whitequark‏ @whitequark Sep 26
          Replying to @mikeymikey

          yup, I've read about that! It's a good move but I like my FOSS Android apps a bit too much to move to iOS

          0 replies 0 retweets 1 like
        6. End of conversation
        1. New conversation
        2. Adam  ♿‏ @voltagex Sep 27
          Replying to @whitequark

          You are incredibly lucky you have the skills and dexterity for this.

          1 reply 0 retweets 0 likes
        3. whitequark‏ @whitequark Sep 27
          Replying to @voltagex

          i normally don't, clomipramine makes my hands shake way too much to even solder a single 1.5sqmm wire in half a hour for some reason it does that less recently, and i'm really lucky about that, yes

          0 replies 0 retweets 1 like
        4. End of conversation
        1. New conversation
        2. Eduardo Rafael‏ @TheEduardoRFS Sep 26
          Replying to @whitequark

          How exactly did you do that? Buy some expensive machine?

          1 reply 0 retweets 0 likes
        3. whitequark‏ @whitequark Sep 26
          Replying to @TheEduardoRFS

          did what, reball BGA? no just the cheapest hot air gun the nearest shop had, an ok soldering iron, a stencil, balls, and some effort

          1 reply 0 retweets 0 likes
        4. Eduardo Rafael‏ @TheEduardoRFS Sep 28
          Replying to @whitequark

          Cool, i always thought that you gonna need some expensive machinery.

          0 replies 0 retweets 0 likes
        5. End of conversation
        1. Hector Martin‏ @marcan42 Sep 27
          Replying to @whitequark

          Caveat: basically all phones (should) use hardware-bound FDE these days. Back up your dm-crypt volume key in advance.

          0 replies 0 retweets 1 like
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