Originally posted by ghost
Maybe
There is a problem with upgrade trophies "glitched"
there is a work around hope this helps
go for the money trick. The best levels to do this in have to be A New Life and Curtains Down as they are the shortest missions in the game(Not to mention easiest if you merely gun down your targets and run for it.).
Select either of those missions from the menu and once you're taken to the shop, fully upgrade your weapon of choice. Start the mission and finish it however you please. The trophy should unlock on the results screen. Now, DO NOT SAVE. Quit the game by holding down the home button and reset it. You will have your trophy for fully customizing ______ weapon along with all of your money intact. Sadly, you will lose your latest upgrades. Continue to repeat the process with all weapons until you have all customization trophies.