dlcnt.bin is a temporary file used by KD to temporarily store downloaded content. This content is decrypted and has the WC24 header removed. Once KD copies the content to the title's wc24dl.vff,(or to wc24recv.mbx with WC24 announcements) dlcnt.bin is deleted. The only time dlcnt.bin is left on NAND, is when STM_Wakeup needed to be called when KD is writing content to NAND. If dlcnt.bin exists when KD_Download is executed again, dlcnt.bin is deleted.