This script uses i2c-tools to flash a new edid to a display (if the EEPROM storing the edid is not write-protected)

edid-flash.py

#!/usr/bin/env python3
import subprocess
import time
i2cbus = 3 #This is important. Check which bus your DDC is on with i2cdetect. 
offset = 0x00 #Where to start writing
data = [0x00, 0xFF, 0xFF, 0xFF, 0xFF,...] #Your EDID Goes here

for value in data:
    print("value", hex(value), "offset", hex(offset)) #for debuging
    print(subprocess.check_output(["i2cset", "-y", str(i2cbus), "0x50", str(hex(offset)), str(hex(value))]))
    time.sleep(0.1) #Makes sure we finish before moving on
    offset += 1