Download 7-Zip 4.58 beta

After nine alpha releases, the first beta release of version 4.58 of the open source archiving program 7-Zip appeared on Monday. This program can handle a large number of compression formats, including zip, cab, rar, arj, lzh, chm, gzip, bzip2, z, tar, cpio, rpm, deb and of course the self-developed 7z. Furthermore, the software is capable of opening iso files and nsis installation packages. Below you can find what has changed:

Changes in version 4.58 beta:

• Some speed optimisations.
• 7-Zip now can unpack .lzma archives.
• Unicode (UTF-8) support for filenames in .ZIP archives. Now there are 3 modes:
  • Default mode: 7-Zip uses UTF-8, if the local code page doesn’t contain required symbols.
  • -mcu switch: 7-Zip uses UTF-8, if there are non-ASCII symbols.
  • -mcl switch: 7-Zip uses local code page.
• Now it’s possible to store file creation time in 7z and ZIP archives (-mtc switch).
• 7-Zip now can unpack multivolume RAR archives created with “old style volume names” scheme and names *.001, *.002, …
• Now it’s possible to use -mSW
• and -mSW+ switches instead of -mSW=off and -mSW=on
• Some bugs were fixed.
• New localizations: Punjabi (Indian), Pashto.

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