Click the "Select File" button above, and choose your DUP file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert DUP to another file type
To convert DUP Update records to another format, you need MEGA HOPEX or other Data software.
Convert a file to DUP
To convert other file formats to the "Data Update Package" file type, you need software like MEGA HOPEX or a similar tool.
About DUP files
.DUP files serve multiple distinct purposes, most notably as data update packages for MEGA International HOPEX and as digital bridge card game records used by Funbridge and Bridge Base Online (BBO). They are also used for avionics and device firmware updates by Dynon Avionics and Victron Energy, or to store duplicate file scan lists in DigitalVolcano Duplicate Cleaner. The main disadvantage of the .DUP format is its severe fragmentation. Because 'DUP' simply stands for 'Duplicate' or 'Data Update Package', dozens of unrelated software applications use it. Firmware update files are strictly proprietary and modifying them will break their digital signatures, making them useless for device upgrades. Bridge game files are often closed binary formats that lock your data into a specific app, requiring paid software to read. For conversion, your options depend heavily on the file's origin. HOPEX update packages are often standard ZIP archives; renaming the extension allows you to extract the data. Bridge hand files should ideally be exported to standard PBN (Portable Bridge Notation) or TXT for cross-compatibility. Duplicate scan lists can usually be exported to CSV for spreadsheet analysis. Opening or converting a .DUP file is notoriously difficult because standard online converters cannot guess which of the many variants your file belongs to. Emphasize that often only the original software can properly read or export the data. If our analysis detects a supported underlying format like ZIP, XML, or SQL, viewing and conversion becomes instantly possible.
Convert.Guru analyzes your DUP file, detects the exact format, and lets you read the text inside.
Users also converted DLM, PBN, 23, 12 and DLF files.
FAQ
If you want to convert DUP file to PBN, SYS, DLL, EXE, DRV, VXD, 386, COM, BAT, CMD, SCR or PIF, you can use MEGA HOPEX or similar software from the "Data Update and Game Record" category. In the File menu, look for Save As… or Export….
To convert MSI, EXE, REG, MST, LNK, CAB, CAT, DRV, INF, SYS, MSU or DLL files to DUP, try MEGA HOPEX or another comparable tool in the "Data Update and Game Record" category.
The DUP Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our DUP converter.