The "update" is only worthwhile if you need to deal with DRM'ed epub files from online e-bookstores or the public library.
The update package is kind of interesting, though, in showing how changes can be made to the firmware. By holding the ALT key down while pressing the "ON" button on the TB, the TB become a USB bootable device. The first part of the update process is to install a windows driver that shows up in Device Manager as an Ingenics USB bootable device. Then you run a batch file that passes parameters to an executable file called USB_Boot.exe. This apparently loads a bunch of large binary files with names like root.upg, kernel.upg, bootloader.upg, and system.upg. After it's all done, you press the reset button on the back to get the TB back into normal mode. I think this will be the template for all future updates.
If my computer's BIOS allowed booting from USB devices, I'd be tempted to try letting the computer boot from the TB. Would I then see the underlying linux file system ?
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