The "UPD" (update) file might actually be a fake login screen. When you try to sign in, the app sends your username and password directly to the hacker running the ".com" site. They can then:
Select and choose the relevant category (e.g., Sexual Content, Illegal Activities). Reporting an Account: Navigate to the user's profile. Tap the Share button (or three dots) at the top right. Select Report > Report Account . Managing 18+ Content Filters (Restricted Mode): Tap Profile at the bottom right. Tap the Menu (☰) button at the top right. Go to Settings and privacy > Content preferences . Select Restricted Mode to turn it on or off. Setting Audience Controls (for Creators): tiktok 18 com upd