hi after several days now i finally catch the solution for this problem

history of phone
stuck on apple logo

so now i decided to restore in itunes ipsw 4.2.1 but error 3194 in itunes
i decided to look for higher ipsw ios 5 but also failed error same
so i decided to update using 6.1.3 ipsw
im glad to see finish restoring so need to activate but i don't have sim carrier original cause this phone is lock in fido

so this procedure of jailbreaking 3gs
redsn0w_win_0.9.15b3 download search on google for your windows

ipsw 6.0 download also search in google

this is my steps using redsnow
open redsnow

tick extras
tick select ipsw - choose ipsw 6.0 promp select NO after that tick BACK
tick jailbreak
put check box Install cydia/
put check box downgrade ipad baseband
because after restoring from itunes 6.1.3 it will become baseband 6.15

make sure your baseband is 6.15 after doing this there are option in redsnow to define baseband located in xtras
the go ahead press next
follow the instruction for dfu mode and wait for finish

when jailbreaking is finish wait to boot you iphone 3gs
you will notice that you are in searching mode insert simcard now when iphone 3gs is jailbreak

this is the last step and you phone will now have signal

follow only this and make sure cydia is already installed to your iphone 3gs

download this from cydia using wifi
go here so you can understand further