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I am trying to do custom bootloader for the firmware update. I am using uart-RS485 for this purpose, so I need to split my .hex file as 512bytes, how can I do that ? I want to select .hex file from my computer, get first 512 bytes and add some details on data and send, and I want to continue like this until the end of the file. what topics should i look at?

gogogo
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    Take a look at [this question/answer](https://stackoverflow.com/a/6787259/3279716) for reading part of a file. – Alex Aug 13 '21 at 14:30
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    Does this answer your question? [Python, how to read bytes from file and save it?](https://stackoverflow.com/questions/6787233/python-how-to-read-bytes-from-file-and-save-it) – Alex Aug 13 '21 at 14:30

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