this is a pit file and has nothing to do with the bootloader. its if you wish to write the correct Partition Information Table due to you altering the sizes of the partitions. if you havent done that (i know you havent) then the pit isnt needed to flash anything in odin as odin will pull the pit file from the device when you click start. loading the pit and clicking start does literally nothing.
First of all, sorry for reviving this old thread
but I'd like to clarify something to our users: Normally you won't need to mess around with the PIT file unless you want to do an experimental ROM, for example, when you want to take the phone to a higher extreme; like adding more space to the data partition, reducing the cache partition (I find this one useful xD), etc.
But remember, if you don't know what the Partition Information Table is, you don't know what you're doing and most certainly you don't want to mess around with the PIT file
Cheers guys!!