FTPS: Convert character set of text data
FTP was designed at times when ANSI was the only possible charset, so it's not well suited for transferring Unicode data. Some servers work in UTF-8, others work with specific character sets. Using TElSimpleFTPSClient.RemoteCharset property you can specify the name of the character set, used by the remote server. When the remote character set is specified, TElSimpleFTPSClient performs conversion of all text data being sent and received via both command and data channels.
Each character set can have several names (and many of them do), so if you know the name of the character set, try to just set it and see if it works. Please use technical support channels to ask more details about character sets and their use in SecureBlackbox.