NumWorks open source calculator
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09-01-2017, 02:47 AM
Post: #29
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RE: NumWorks open source calculator
(08-31-2017 09:55 PM)Paul Dale Wrote: Without a form of secure boot, upgrading will be possible. It could be very hard. From the link I posted, the bootloader is in ROM, comes from the manufacturer of the MCU, and has the ability to reflash the firmware through UART, USB, etc. and doesn't have any cryptography. Even if they put a second stage bootloader to check a signature, you can simply flash another one with the factory bootloader. It is marketed as an open platform and I think it is, there's no need to find hidden ways to hack it. I have no interest in bypassing exams, but if it's as easy as it seems to be, the main concern is the exam boards pulling their certification, then they can't sell and become instant vaporware. The big question is if our community should adopt it as an open platform and port our favorite firmware projects to it, with the risk that all our effort can go to waste if they pull out of the market. It's a risky move. |
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