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Added another button-for-flashing example image.

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Maurice Makaay 3 years ago
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      doc/flashing.md

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@ -130,9 +130,9 @@ find another way to attach `GPIO0` to ground. Some options:
practical solution for most people (since only one such flash operation is practical solution for most people (since only one such flash operation is
needed, from then on OTA - Over The Air - updates are possible), but it needed, from then on OTA - Over The Air - updates are possible), but it
was a great help to me during the initial reverse engineering and firmware was a great help to me during the initial reverse engineering and firmware
development.
[View example by @mmakaay](images/13_connect_to_serial_with_button.jpg) or
[another example by @edwinschoonhoven](images/13_connect_to_serial_with_button_alternative.jpg).
development. Some example implementations: [a crude one by @mmakaay](images/13_connect_to_serial_with_button.jpg),
[one by @edwinschoonhoven](images/13_connect_to_serial_with_button_alternative.jpg),
and [one by @mmakaay, inspired by Erwin's](images/13_connect_to_serial_with_button_alternative2.jpg).
- **Manually hold a wire connected** to both a GND surface (e.g. the silver pad - **Manually hold a wire connected** to both a GND surface (e.g. the silver pad
on the left of the board) and the `GPIO0` debug pad, while plugging in the on the left of the board) and the `GPIO0` debug pad, while plugging in the


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