Upd is shorthand for . So, user blob farmville 2 upd refers to the process of updating your personal game data file .
Your user blob is tied to your specific account (Facebook, Game Center, or Google Play). Logging out and back in forces the server to re-authenticate your identity. Launch FarmVille 2, go to the settings menu (gear icon), disconnect your account, close the game, open it again, and log back in. The system will recognize the account and force a full resync of your user blob data. user blob farmville 2 upd
Rather than storing each item individually, the game wraps all your information into this single "blob" package. When the game needs to check your progress or save your latest actions, it accesses your specific user blob. Upd is shorthand for