because afudos gave "security verification failure" when flashing modded rom, i readed full dump of bios Aptio 5 with external programmer, i changed boot logo using phonixtool266 and flashed it back = system boots, show modded logo then black screen with error "Boot Guard verified DXE that is fail System will shutdown Press any key" i also tryed uefitool to change logo= same result logochanger 5 says no logo in file please help me i urgently need the logo to replaced on many bios's anyother tool that works 100% on uefi aptio 5 american megatrend bios on DELL or anyone could change logo for me (replace DELL logo with any thing just to test if it is ok) this is full dump : h t t p : / / www . 4shared . com/file/B3_k0Fxlce/BIOS_DELL_3650_25L6473E . html (delete spaces) thnks