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> Curious why specifically a Pi?

Not the OP, but I guess the power of Raspberry Pi is that everyone already has one - really useful if you want to do something in a hurry without anything extra. I've used a Pi as an emergency programmer on multiple occasions, as an SPI flash burner, as an SWD debugger, as an AVR programmer. You can even use the Pi as an USB-FDD bootdisk or emulate an IDE driver via its parallel interface.