Unpacking
copy any .bndl files from game dir (Need for Speed Most Wanted/HAWAii),will include the list on which to replace
open the .bndl with TextureUnpacker.exe(Drag .bndl file on the TextureUnpacker.exe)
Then it would unpack every single .dds file in the selected .bndl file

Exprting .dds to a .bndl,replacing textures
the textures (.dds) you extracted with textureunpacker.exe
use the texchallenger.exe, don't ask me why it's like that,idk
select .bndl in which you want to replace .dds(YOU CAN SELECT MULTIPLE .BNDL's AT THE SAME TIME),then select .dds (YOU CAN SELECT MULTIPLE .dds AT THE SAME TIME), then transform


Don't forget to make copy of your gamefiles,i will not be responsible if your game ends up on infinite loading screen or worse