there are no real LLF utilities for IDE's, only things that write zero's and ones.. and they certainly can't fix and remap the hard drive structure.
Maxtor Claims different, I used this utility a couple of times (clearing a hard drive is not exactly a hobby).
WARNING: ALL DATA WILL BE LOST WHEN PERFORMING THE LOW LEVEL FORMAT QUICK OR FULL OPTIONS.
http://www.maxtor.com/en/support/downloads/powermax.htm
The utility has aslo diagnostic utils etc built in and returns your HD to the factory state.

/* Note that this utility offcourse only works for maxtor harddrives */

EDIT:
http://www.webopedia.com/TERM/L/LLF.html
Modern hard drives are low-level formatted at the factory for the life of the drive. A PC can not perform an LLF on a modern IDE/ATA or SCSI hard disk, and doing so would destroy the hard disk.
Now I am confused