I don’t really understand that comment.
The Edgent example already has Blynk.Air OTA built-in, and doesn’t need any editing of the “loop code” to make OTA work.
If you want to add Blynk.Air OTA to a non-Edgent sketch then you should read this…
Also, your Deep sleep sketch is very badly written. It keeps your device awake for far longer than is needed, and most of the delays in your sketch are redundant.