last-steps

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C# code
class Program
{
static void Main(string[] args)
{
if (args.Length > 0)
{
var fileName = args[0];
byte[] bytes = File.ReadAllBytes(fileName);
byte[] arrBytes = Encoding.UTF8.GetBytes(ASCII8ToString(bytes));
File.WriteAllBytes("foo.txt", arrBytes);
}
else Console.Write("File not found!");
}
static string ASCII8ToString(byte[] ASCIIData)
{
var e = Encoding.GetEncoding("437");
return e.GetString(ASCIIData);
}
}

@igerasymchuk it does have a solution and you're very close.

@zaccharles Finally I fix it (with a little help of my friend :) The new converter is ready to download https://dl.dropboxusercontent.com/u/933318/gistfix.exe

    static void Main(string[] args)
    {
        if (args.Length > 0)
        {
            var fileName = args[0];
            var content = File.ReadAllText(fileName);
            var encoding = Encoding.GetEncoding(437);
            var bytes = encoding.GetBytes(content);
            File.WriteAllBytes("repaired.zip", bytes);
        }
        else Console.Write("File not found!");
    }

Woohoo! It's correct :D

@zaccharles @igerasymchuk try another archive :)