[Tinyos] install tinyos 1.1.0

[xufei]

I installed tinyos 1.1.0 by installed tinyos-1.1.0-1is.exe first and then updated to tinyos1.1.7 by installed tinyos-1.1.7July2004cvs-2.cygwin.noarch.rpm  in two PC(windows), one was good but another bad,I installed  tinyos 1.1.0 ,failed,uninstalled it and failed again.How can I uninstall failed tinyos 1.1.0 completely and install tinyos1.1.0 correctly?
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