Fedora installation - Pendrive not detected at boot

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Hi, I'm trying to install Fedora 17 using my pendrive, I wrote the .iso with Fedora's LiveUSB Creator as well as other programs for Windows like Universal USB Installer or Unetbootin.

I formatted the pendrive in fat32, I tried to update the syslinux inside LiveUSB Creator, but the pendrive is not showing in the boot menu. Can you help me?