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Cake day: April 13th, 2024

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  • Yeah agreed especially further down when it’s just randomly rehashing old history. It’s also mixing up decryption and verification even in the beginning of the article. First they write:

    BootROM (Level 0): The CPU runs code burned into it at the factory. This code is immutable (cannot be changed). It uses the ROM Keys to verify the signature of the next loader.

    Then just two paragraphs below:

    The ROM Keys change everything. With these keys, hackers can decrypt the Level 1 Bootloader.

    So which is it? Usually bootloaders in a chain hash the next stage. That hash is compared with the signed hash the stage presents, and the signature on the signed hash is cryptographically verified against the locally stored trusted keys. No encryption or decryption takes place. Maybe this is different for the PS5 but then that would be noteworthy, not something you just assume readers to know.










  • I take issue with this forced distinction they are making

    Micron, like Samsung and SK Hynix, already supplies memory chips directly to third-party brands such as G.Skill and ADATA. Even without Crucial-branded kits, Micron DRAM continues to reach consumers through other manufacturers, meaning overall supply remains largely unchanged.

    Nobody ever officially suggested the Crucial supply was likely to shift to the other manufacturers for consumers. On the contrary people expect this to be a step towards a general redistribution of manufacturing capacity towards HBM for parallel compute products.

    By comparison, Samsung exiting SATA SSDs removes an entire class of finished consumer products from one of the world’s largest NAND suppliers. Tom argues that this is why the Samsung move is “worse” for consumers: it directly affects how many drives are available, not just who sells them.

    If you wanted you could make the same argument as for Micron. Who says the Samsung NAND couldn’t be bought by other OEMs to make consumer SSDs. It’s just as possible as the Micron supply shifting to other OEMs who make consumer RAM sticks.

    To me neither are likely. The manufacturing capacity both companies are pulling from the consumer market in both cases is going to go to the higher profit margin parallel compute server market. Neither is worse than the other, they are both equally bad news for us consumers.







  • I wish people (especially journalists) would get it through their skulls already:

    • Vehicles don’t communicate with satellites.
    • GNSS (like GPS, GLONASS, Galileo, or BeiDou) do not use two way communication.
    • The satellite can therefore not know the position of a GNSS receiver.
    • Instead the satellites send timestamps and their positions, the receiver uses that information to calculate its own position. If the system with the receiver needs to report its position to someone they typically use some form of terrestrial communication, like mobile phone networks.

    With that knowledge the comment by /u/[email protected] makes a lot more sense than whatever the article is trying to imply about satellite failures.


  • I had random issues with a laptop bluetooth adaptor around 6-7 years ago. I was able to hack together a script that wrote “0” to the /power endpoint of the PCI device in the sysfs, and then triggered a rescan of the PCI bus as a workaround.

    Maybe something similar could work for your case, depending on how the bluetooth device is connected. Just an idea, not sure if it will work for you, but may be worth looking at.