An error occurred when using iFaithv 1.4.2 to restore the self-made signature firmware with iTunes. The self-made firmware was restored in the jailbreak state of iPhone4 and IOS 5.0. 1

With AISI Assistant, iTunes 1 1 seems unable to brush the self-made firmware.

If your SHSH is backed up locally:

Aisi Assistant-Toolbox-Advanced Player-Upload SHSH: Select your local backup SHSH file (if there is a backup on Cydia server, skip the next step).

Then check:

Aisi Assistant-Toolbox-One-click Brush-Query SHSH: There should be 5.0. 1 in the result.

Brush machine:

Aisi Assistant-Toolbox-One-click Brush Machine-Select Firmware: The official firmware 5. 0. 1- is loaded and brush the machine immediately.