How to edit TFP401 EDID with Arduino Uno

[djblex]

Hello,
My devices :
-TFP401,
-Arduino UNO (board UNO R3 Rev3 développement board ATmega328P CH 340G AVR board)
-Adafruit 5 inch display without touch

Anyone knows how to edit exactly the TFP401 EEPROM ?
There are explaination here : https://learn.adafruit.com/adafruit-tfp ... g-the-edid
but not with process details (for me :) ).

I have an Arduino Uno, i plugged SLC , SDA, GND and 5V from Arduino to TFP401. But the TFP401 does not seem powered on (no led blue ).

Do i have to put USB 5 v plus the 5v from the Arduino ?

Then, which software do i use to transfert the code : Arduino interface 1.8.3 ?
If yes, my board doesn't appears exactly in the board list : Arduino genuino Uno or Adruino UNO Wifi ?

On the link https://learn.adafruit.com/adafruit-tfp ... g-the-edid
in the code, there are « /* 480x272 @ 25mhz” resolution and “/* Adafruit breakout @ 800x480 ! */”.

I only need 800X480 resolution , do I have to upload all the code or do i delete the « /* 480x272 @ 25mhz” part ?

Thank you very much for your help.