Bootstrap (v5)
Current time is Dec 8, 2014 2:22:52 PM
System.getProperty('os.name') == 'Windows 7'
System.getProperty('os.version') == '6.1'
System.getProperty('os.arch') == 'x86'
System.getProperty('java.version') == '1.7.0_67'
System.getProperty('java.vendor') == 'Oracle Corporation'
System.getProperty('sun.arch.data.model') == '32'

Found cached update
Renaming C:\Users\zhangxiaoming\AppData\Roaming\.minecraft\launcher.pack.lzma.new to C:\Users\zhangxiaoming\AppData\Roaming\.minecraft\launcher.pack.lzma
Renamed successfully.
Looking for update
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma
Didn't find an update in time.
Reversing LZMA on C:\Users\zhangxiaoming\AppData\Roaming\.minecraft\launcher.pack.lzma to C:\Users\zhangxiaoming\AppData\Roaming\.minecraft\launcher.pack
Got reply in: 3502ms
FATAL ERROR: net.minecraft.bootstrap.FatalBootstrapError: Unable to un-lzma: LZMA.LzmaException: LZMA header corrupted : Properties error
        at net.minecraft.bootstrap.Bootstrap.unpack(Bootstrap.java:146)
        at net.minecraft.bootstrap.Bootstrap.execute(Bootstrap.java:123)
        at net.minecraft.bootstrap.Bootstrap.main(Bootstrap.java:381)


Please fix the error and restart.
Exception: java.net.SocketTimeoutException: Read timed out
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 2/10)
Exception: java.net.ConnectException: Connection timed out: connect
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 3/10)
Exception: java.net.ConnectException: Connection timed out: connect
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 4/10)
Exception: java.net.ConnectException: Connection timed out: connect
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 5/10)
Got reply in: 4389ms
Exception: java.net.SocketTimeoutException: Read timed out
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 6/10)
Exception: java.net.ConnectException: Connection timed out: connect
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 7/10)
Exception: java.net.ConnectException: Connection timed out: connect
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 8/10)
Exception: java.net.ConnectException: Connection timed out: connect
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 9/10)
Exception: java.net.ConnectException: Connection timed out: connect
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 10/10)
Exception: java.net.ConnectException: Connection timed out: connect
Unable to download remote file. Check your internet connection/proxy settings.

我也一直是这样 更新版本从来就没成功过

这是网络问题 mc的很多资源都需要从s3.amazonaws.com下载  但是国内访问那个服务器不是很稳定
某些地区访问特别困难→_→  用vpn下载吧