user51033: I need to bootload my Uno board but I do not have another Arduino at my disposal so how do I bootload without another Arduino board

user37622: There are 3 main options how to write bootloader or program to AVR over ISP.

dedicated AVR programmer or Arduino ISP programmer
other Arduino with Arduino as ISP sketch or similar
parallel port of a computer


user50469: The USBTinyISP programmer attaches to your computer's USB port and uses the 6-pin ICSP port on your Arduino to program it.  It can program both bootloaders and sketches.  It can be purchased for less than $10 from Amazon or Ebay. 
USBTinyISP programmer

51033: <p>I need to bootload my Uno board but I do not have another Arduino at my disposal so how do I bootload without another Arduino board</p>
 37622: <p>There are 3 main options how to write bootloader or program to AVR over ISP.</p>

<ol>
<li><a href="http://www.ladyada.net/learn/avr/programmers.html" rel="nofollow noreferrer">dedicated AVR programmer</a> or <a href="https://store.arduino.cc/arduino-isp" rel="nofollow noreferrer">Arduino ISP programmer</a></li>
<li>other Arduino with Arduino as ISP sketch or similar</li>
<li><a href="https://www.instructables.com/id/Simplest-AVR-Parallel-port-programmer/" rel="nofollow noreferrer">parallel port of a computer</a></li>
</ol>
 50469: <p>The USBTinyISP programmer attaches to your computer's USB port and uses the 6-pin ICSP port on your Arduino to program it.  It can program both bootloaders and sketches.  It can be purchased for less than $10 from Amazon or Ebay. </p>

<p><a href="https://rads.stackoverflow.com/amzn/click/B075LJPF4L" rel="nofollow noreferrer">USBTinyISP programmer</a></p>
