現在還可以用小雨傘備份嗎?

目前版本是4.3.5,之前手機備份的時候只有4.3.4和4.3.5

目前手機壞了換了一支,要備份的時候竟然都沒SHSH了...會出現如下的msg

08/18/2011 11:19:56.766 Found [0] shsh files to cache...

08/18/2011 11:19:56.782 Cached [0] shsh files

08/18/2011 14:50:15.842 For version [iPhone4 4.3.5 (8L1)] - This device isn't eligible for the requested build.

有大大這樣的嗎?