How to save a hex file into Arduino Flash to send it via Serial? I have a text file with hex values formatted in the following style:

A0 3F 55 01 00 C7 55 01 00 C7 AA 29 71 11 00 0B
00 C7 AA 29 71 1F AA 29 71 11 55 01 A0 3F 55 DC
...


How can I save this data into my Arduino's Flash (to save RAM)? What libraries are needed? Is there any tool that can automatically create code for this purpose?

After I save this data into the Arduino's Flash, I want to send the data via Serial. I have to send it as binary.

A solution without saving it into the Flash would be also OK.

I am using an Arduino Due.
If I understand your question correctly, you need to integrate this data into a .ino script.  Probably as a byte array. Then the script can read the array and Serial.write its content.

You could write a small tool in Python or else on your computer, that takes the text file and converts it into a .h header. Include that into your .ino script. Or use your favorite text editor to format the data into C++ code, and copy/paste that into your script.