what version of the usb explorer do you have?
also do you have modio?

this is the version of the usb explorer i have
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make sure your usb is configured for your xbox if it isn't configured plug it in go to settings> memory> "your usb" then enter the usb and hit configure before doing that just know it deletes everything off it.

put a profile on the usb

on the computer:
open usb explorer
file>open device
there should be one that says 0>opendir or something like that above the 2 dots
open that one and continue opening the top on till your at the end and its asking where you want to save the file that will be your profile.

don't close usb explorer


put it on you desktop

then open modio
click and drag your profile from the desktop to modio
your profile should appear
on the top of the profile picture click file contents

find the .gpd with the same number as yours select it but don't open it
afterward right click the file and click replace file

go to wherever it is you have the modded .gpd saved and double click or click and hit open on the bottom of the pop-up

you must click rehash and resign so that the profile will not be corrupted

afterward go back to usb explorer

with your profile still selected click delete (this will delete the unmodded profile)
click inject then go to the desktop where the profile you modded is find the profile and open it

it should now be in the usb explorer close the usb or remove it

put the usb in the xbox go to memory and transfer the file to the hdd

sign into the profile and go to zombies

have fun =D

not to be mean, but i can't understand your question because of your horrible spelling, and grammar.

jusr re download usb explorer in a diff spot or get modio and opoen ur drive there