Title Update not applied, where do I go wrong?

This is what I do:

- Insert usb to xbox and format it
- Insert usb to pc
- Start xtaf
- Go to cache partition and then cache and select inject
- Browse to title update file
- Insert usb back in xbox and start Halo 3.

No update:-(

Do I have to remove the HDD and the internal 4 gb flash memory on my slim device to make this work?

 

clear the cache on the 4gb memory + the hard drive...this will delete all updates

 

already done, but no difference.

Tried with black ops and halo 3 since version number is easy to check in both those games.

 

you might need to place the update in the folder where gamesaves are