can NOT jb i4S with redsn0w - factory unlocked i4S with 5.1.1
I got an error msg "service wouldn't start (3986)" after redsnow "backing up the device", then stop.
The previous version of redsnow(win) 0.9.12b1 display message "error 2000" . Today the latest version of redsnow came out but displayed "service wouldn't start (3986)" again.
Any help will be appreciated.