Hey guys, I know there is already an Editor on the site, but I wanted to make one too :P
How to Use:
EDITOR:Code:1. Extract your slot.bin from your USB 2. Open your save into the Editor and Mod your XP 3. Press Save 4. Open your save back into Horizon and press Rehash and Resign 5. Replace the save back onto your USB 6. PLAY!!!!
Thanks to feudalnate for PackageIO