Universal Dreamcast Patcher 2.1.1

Version 2.1.1 (2026-05-17)

• New batch mode added to "Converter" tab (see Issue 12).
• External DATs can now be used for disc image convert operations (see Issue 13).
• "Build Patch" tab's IP.BIN modifications section redesigned (see Issue 14).

Version 2.1.0 (2026-05-15)

• Added tooltip text to all selectable UI elements (see Issue 7).
• Patched output disc image now supports writing CUE/BIN and CHD (see Issue 8).
• New "IP.BIN Editor" tab added (see Issue 9).
• New "Converter" tab added (see Issue 10).
• Dialog box titles modified for Information/Confirmation/Error consistency (see Issue 11).

Version 2.0.2 (2026-05-08)

• In macOS, fixed System Bar's "About " string (see Issue 5).
• Fixed potentially destructive behavior in Windows/Linux auto-update (see Issue 6).

Version 2.0.1 (2026-05-05)

• Fixed potential auto-updater breakage in the future due to build pipeline version mismatch (see Issue 4).

Version 2.0.0 (2026-05-04)

• Complete rewrite, combining the patcher and patch builder into a single cross-platform application (Windows, Linux, macOS).
• Removed all dependencies on external helper utilities, natively implementing all disc-image extract, rebuild, and binary diffing operations.
• Added support for CHD as a source disc image format (automatically decompressed and, if necessary, converted to GDI from CUE/BIN).
• Added built-in auto-update on Windows and Linux.
• Patched disc images and DCP files are now byte-identical across platforms for the same inputs, finally delivering reliable checksums.

Version 1.8 (2024-11-08)

• Fixed bug in both patcher and patch builder when processing GDIs with over 90 CDDA tracks.

Version 1.7 (2024-11-08)

• For both the patcher and patch builder, added support for GDI source disc images that use 2048-byte-per-sector ISO data tracks instead of standard 2352-byte-per-sector BIN data tracks.

• Version 1.6 (2023-07-17)
  • Fixed bug in processing Redump-style CUE disc images with more than 10 tracks (Issue #2).
  • Enhanced integrity checking of patched GDI output.

• Version 1.5 (2023-05-13)
  • Eliminated IP.BIN-patching helper utilities in patch-building utility, with code now directly implemented.

• Version 1.4 (2022-11-24)
  • If patch utilizes xdelta, the current filename being patched is now displayed in the progress status message, avoiding the appearance of failure when processing large quantity of files.