3GS 有條件的維持在 OS 3.0 / 3.0.1 的簡易方法

[DearBear]

好奇怪，我JB 3.1.2之前

訊息是:
This device has a 3.0 ECID SHSH on file

JB 3.1.2後變成

This device has a 3.1 ECID SHSH on file

正常 *?

[singwong]

我已跟樓主的指示做了, 但還是出現"This device isn't eligible for the requested build."的訊息.
我用的是iTunes 8.2, Windows 7. 而且在Cydia也有ECID的備份了....
請問我有那裡做錯了??