[quote=Ywei,Aug 9 2009, 11:52 AM]
after 1 month of JBing in 3.0
my iphone suddenly stuck at plug into itunes screen.

when i connect to itune and try to restore. below error occur.
Problem Encountered : iPhone could not be restored, unknown error (28).

i got same problem like this..
i update at itunes to latest firmware and it ask to put simcard to unlock
but then when i put simcard it said
"the simcard inserted in this iphone does not to be supported"

what should i do?
what is redsnow have to use it for what?
and where to get it ?

or it is simcard problem ?