Category Archives: emmc

Hot Air Surgery Revives a Cheap Windows Tablet

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[Jason Gin] recently wrote in to tell us about his adventures replacing the eMMC storage chip on a cheap Windows tablet, and we have to say, it’s an impressive amount of work for a device which apparently only cost him $15. Surely much better pieces of hardware have been tossed in the trash for less serious failures than what ailed his DigiLand DL801W tablet. We’d love to see the lengths this guy would go to restore something a bit higher up the food chain.

As any good hacker knows, you can’t fix the problem until you understand it. So the …read more

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34C3: Hacking the Nintendo Switch

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There’s a natural order to the world of game console hacking: every time a manufacturer releases a new game console they work in security measures that prevent the end user from running anything but commercially released games, and in turn every hacker worth his or her salt tries to break through. The end goal, despite what the manufacturers may have you believe, is not to run “bootleg” games, but rather to enable what is colloquially referred to as “homebrew”. That is to say, enabling the novel concept of actually running software of your choice on the hardware you paid for. …read more

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EMMC Hacks For The Speed And Capacity Upgrade Win

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You could say that it is the essence of a site like this one, that the kind of people who form our readership are also the kind of people who examine the specs of the devices in front of them to reveal hidden features. Such was the case with [Ryan], who noticed that the eMMC controller on his 96Boards HiKey development board supports both HS200 data transfer speeds and 1.8v signaling, both of which it wasn’t using.

In unlocking the extra performance, he takes readers through a primer on the device tree, and is happy to report that his transfer …read more

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eMMC to SD Hack Rescues Data from a Waterlogged Phone

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How do I get the data off this destroyed phone? It’s a question many of us have had to ponder – either ourselves or for friends or family. The easy answer is either spend a mint for a recovery service or consider it lost forever.  [Trochilidae] didn’t accept either of those options, so he broke out the soldering iron and rescued his own data.

A moment’s inattention with a child near a paddling pool left [Trochilidae’s] coworker’s wife with a waterlogged, dead phone. She immediately took apart the phone and attempted to dry it out, but it was too late. …read more

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Roll Your Own 64GB SD Card From An EMMC Chip

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It’s well-known that buying Flash storage devices from cheap online retailers is fraught with danger. Stories abound of multi-gigabyte drives that turn out to be multi-megabyte ones engineered to falsely report their capacity. So when [Jason Gin] found a source of 64GB Toshiba eMMC chips for only $6 per device he bought a few, but was prepared for disappointment.

To test them, he decided to use an SD card interface. There are minor differences between eMMC and SD, but the interfaces are electrically the same and in most cases an SD controller will happily do business with an eMMC. It …read more

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Single Board Revolution: Preventing Flash Memory Corruption

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An SD card is surely not an enterprise grade storage solution, but single board computers also aren’t just toys anymore. You find them in applications far beyond the educational purpose they have emerged from, and the line between non-critical and critical applications keeps getting blurred.

Laundry notification hacks and arcade machines fail without causing harm. But how about electronic access control, or an automatic pet feeder? Would you rely on the data integrity of a plain micro SD card stuffed into a single board computer to keep your pet fed when you’re on vacation and you back in afterward? After …read more

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