[flashprog] Flashprog to Remove Libreboot

Hello , I've never used Flashprog. Not sure what version to download. My laptop is a Lenovo X-200 64 bit/ 8G ram Libreboot w/ Linux Mint 21.2 OS. Having issues w/ the Libreboot & want to erase. Please direct me to the proper version & any instructions for usage. I looked at the Man Flashprog pages but the -E , Erase command didn't help since I never got the application working. I need to flash the EC chip & remove so will : sudo apt update & sudo apt install flashprog in the terminal work, or are there other commands I should be using once the proper file is downloaded? Thank You, David