, you must have the original passphrase. Without it, the data inside is unreadable, though brute-force tools can sometimes help if you remember parts of the password. File Corruption
While legacy formats have been dropped in newer versions, Bitcoin Core can usually still import/upgrade these files. old walletdat exclusive
: Many "lost" Bitcoins from 2009–2012 are locked in these files, often on discarded hard drives or old laptops. , you must have the original passphrase