Either post it on hatena and lock it or send it to someone and lock it. Only 2 ways.
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If it is no longer in your System Memory, go to your Creator's Room and download your Flipnote. If you already have this Flipnote in your memory, you may skip that step. Once you have the Flipnote saved, go to Hatena. Choose a channel to post to. When you re-post your Flipnote, DO NOT choose "Lock." Now your Flipnote is unlocked.
Okay, the only answer is that you have to post a # amount of stars' comment to ask to unlock it... and the other way is to download it anyway nd edit away... lol besides that i have no idea O_O sorry lol! Actually, there IS a way! To do this you need two dsi's. First, download it to one dsi. Second, hit send flipnote on that dsi to the other one. Third, it will ask you do you want to unlock it, or lock it? Hit unlock. BUT, if you want it on that dsi, (the one that you originally had it on) delete it and then send it from the dsi that has it unlocked to the one that you deleted it from.
no Nintendo put a lock on the wii's so you cant
Go to, 'Roblox Studio' then go to your profile and click, 'Edit' then go to workspace and you should see a brick and on properties there should be a 'lock' button, you have to un-check it and then you should be able to change your floor/plate.
when you post your flipnotes on the Hatena website it says lock or don't lock and you press lock or when you send your flip notes to someone it asked you if you wanted to lock or don't lock and you choose and that is how you lock your flip notes on the dsi have fun!!!