Current version of Inno Setup Unpacker recognizes ALZip 4.86[1] is compressed by Inno Setup version 1.3.25, but cannot extract from the archive. By comparison, Avast! AntiVirus is able to unpack Inno Setup 1 archives. There are minimal differences between Inno Setup versions, so adding support for Inno Setup 1 archive should be trivial.
Adding support for IS 1.x has one significant problem: no sources for those versions left in public access (or probably no left at all). And since there are few files packed with 1.x can be found it not worth the effort to dig deep into this matter.
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Current version of Inno Setup Unpacker recognizes ALZip 4.86[1] is compressed by Inno Setup version 1.3.25, but cannot extract from the archive. By comparison, Avast! AntiVirus is able to unpack Inno Setup 1 archives. There are minimal differences between Inno Setup versions, so adding support for Inno Setup 1 archive should be trivial.
[1] enter address [2], then click on link with alzip486.exe
[2] http://simfile.uplusbox.co.kr/_common/view/httpDownload.html?fnum=18675&ttype=0
Adding support for IS 1.x has one significant problem: no sources for those versions left in public access (or probably no left at all). And since there are few files packed with 1.x can be found it not worth the effort to dig deep into this matter.