Mega2560 sketch update via bluetooth using SD card?

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I have a Mega2560 installed in my car that I write logs to on the SD card and I access it through an android app via bluetooth. Is it possible for me to transfer new sketch code in .bin format to the Mega2560 using the app? Could I download the .bin file from a web address to the android device, send that .bin to the SD card then tell the Mega2560 to update itself with the new sketch .bin?


I found the following, but does it need an additional deployment device?

Thanks!

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In principle, yes. Unless someone has already done exactly that, expect to encounter a number of barriers in the way of getting it to work. That link is certainly a starting point.

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