user60363: What should be done to solve it?
I have edited the board.txt file and none of my codes are getting verified 
it shows this error:

"Error reading file (C:\Program Files
  (x86)\Arduino\hardware\arduino\avr\boards.txt:0): Invalid line format,
  should be 'key=value' "


user31105: You can either reinstall the Arduino IDE (it will replace the file), or copy the original code back in the file (if you have a copy somewhere).
See the link: https://code.google.com/archive/p/arduino/wikis/Platforms.wiki for more background in case you are interested.
(note: I cannot copy the content of the file in the answer since it is more than 30000 characters.)

60363: <p>What should be done to solve it?
I have edited the <code>board.txt</code> file and none of my codes are getting verified 
it shows this error:</p>

<blockquote>
  <p>"Error reading file (C:\Program Files
  (x86)\Arduino\hardware\arduino\avr\boards.txt:0): Invalid line format,
  should be 'key=value' "</p>
</blockquote>
 31105: <p>You can either reinstall the Arduino IDE (it will replace the file), or copy the original code back in the file (if you have a copy somewhere).</p>

<p>See the link: <a href="https://code.google.com/archive/p/arduino/wikis/Platforms.wiki" rel="nofollow noreferrer">https://code.google.com/archive/p/arduino/wikis/Platforms.wiki</a> for more background in case you are interested.</p>

<p>(note: I cannot copy the content of the file in the answer since it is more than 30000 characters.)</p>
