so long as its just the store being updated you are fine. its just like a title update for a game, its safe for your JB ps3. now when you get your dlc on your jb ps3 that ps3 will be activated under your account. if the console gets banned it will ban the account as well, any account activated on it. if you dont want that happening then then look up on how to get your act.dat file from your account from a file manager and copy it to a usb or something then deactivate the ps3 so its not on your account. this will have issues with your dlc and wont let you use it but if you copy the act.dat file to your account again via file manager it all will work again and the ps3 still wont be activated under your accountWHAT IF IT ASKS ME TO UPDATE THE STORE FIRST
you just need to have internet access on your ps3. so if you go to the browser on your ps3 and can browse the web then starting up the game while you can do that will let you be able to download the update (if available for the game) just like a retail ps3. alternatively you can just google most updates for games. they will be in a .pkg file and you install them like any other app/homebrew via package installerthanks guys one more ? if I DOWNLOAD A GAME FROM THE STOR BUT IT DOES NOT show up in multiman how do I update that game?