making hex file un readable

billduck · Post by **billduck** » Sat Oct 27, 2018 12:05 am

Is there a way within Flowcode ver 7 to prevent the downloaded hex file not to be readible from an Arduino UNO?

Post by **Benj** » Tue Oct 30, 2018 5:23 pm

Hello,

Yes there should be lock bits you can set via AVR studio etc. You will need a ICSP such as the AVRtiny or AVRISPmkII to be able to access the device memory without using the Arduino Bootloader.

billduck · Post by **billduck** » Mon Nov 12, 2018 10:43 pm

The following link shows how to use Atmel Studio to set lock bits. It points out that the only way to undo the lock bit is to erase the device. The bootloader is erased, so that has to be reloaded.
https://www.youtube.com/watch?v=cr0VDOlGVlU

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making hex file un readable

making hex file un readable

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Re: making hex file un readable