Unable to boot Archiso USB in UEFI mode

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https://bbs.archlinux.org – Hello Everyone ! I'm trying to create an UEFI bootable USB from the latest ISO : 2012.10.06. I first tried following this section of the wiki : https://wiki.archlinux.org/index.php/Un … B_from_ISO with an usb key formatted as an EFI System (of type "ef00" in gdisk) and with a FAT32 partition on it.All steps went right but when i try to boot with this key from the EFI menu, i get an infinite black screen and the usb key led isn't blinking so i suppose it's not loading.I have refind already installed on my system. When i try booting the key from refind, I get the same (HowTos)