Bios Mods -The Best BIOS Update and Modification Source

Hi i have tried to self mod my bios changing ID of an existing 3G card with my 4G card Id but now i'm bricked. attached there is the dump made with spi programmer. Please help me with subtituction. new id is: Vid_03F0PID_421D&REV
-Manufacturer: HP
-Motherboard Model: HP Probook 6475B
-Bios revision: Ver. F.63
-Bios Download Link:https://drive.google.com/open?id=0B6...ENtdm5ZSmNXbU0

Hello!All new HP bioses are RSA signed and you'll brick laptop every time when mod flashed.

thanks for reply, plz explain me a thing: when i make a dump and i mod it when i loose the rsa sign?