Kernel does not appear in the menu

Hello everybody,

I recently bought an EZ-Flash Omega for my GameBoys but I actually can't use it for now. I downloaded the kernel 1.06, firmware 7 and thumbnails pack yesterday on October 16th. I de-zipped files to my MicroSD root but only the folder IMGS appears when I boot my GBA SP. However, I got the "ezkernel.bin" and a game in. :/
Does somebody may help me?
Thank you in advance!

Luma