Use verified services that offer secure, encrypted "vaults" for your files.
You may see websites or forums advertising a "free" version or a "+15" update for this tool. Use extreme caution. Since this is a built-in system file, any third-party ".exe" or ".apk" claiming to be an "Auto Unlocker" is almost certainly Risk of Bricking: secrecyautounlocker+15+free
Below is an article exploring the concepts of such tools, the risks involved, and how to stay safe. Use verified services that offer secure, encrypted "vaults"