Thanks a lot to Kareivis who found this tool and shared it to me, it will be very helpfull. ;)
With this application you will be able to freely edit your level (1 to 55) and your prestige (1 to 15) in PlusOps 2. In addition, you can edit your statistics of killings, headshots, experience, etc. Furthermore, this application gives you the ability to unlock all the camouflage of the game for each weapon, and choose them both in the creation of your class and during the match, with an option to switch between them automatically.
To use this application you have to start the game and go to the barracks. Then just start the application and enter the parameters you want to change. To unlock the camos you must click on the appropriate buttons at the bottom right, pressing them all for each weapon, in order to save every camouflage available for each weapon.