Clogo.bmp <> Logo.bin.
Clogo is just "normal" BMP file, 720x1280 in size, with one and only one graphic in it. Its used on phones that have never had an unlocked bootloader.
Logo.bin contains 3 "images" (M logo, battery graphic for 0-3% charge, and unlocked bootloader warning), and its saved in a "special" file format. Its used if the bootloader is either Locked or Relocked. To make your own LOGO.BIN, see the tips in
This Post and use
carock's script
And I've added both the new black and white "powered by Android" Clogo.bmp's, along with converted to Logo.BIN files to -> ->
http://mark.cdmaforums.com/X-STUFF/X-LogoBins.zip (when you unzip, the Cvtd folder contains the original graphic so you can see what they are, and the LogoBin folder contains the logo.bin ready to flash)