Solution for iOs 6.0.1 no service for iPhone 3GS old & new bootroom

jailbreak using redsnow_win_0.9.15b3
then select 6.0 ipsw
select install cydia & install ipad baseband
after jailbreaking just boot tethered
open cydia
add sources:http://repo666.ultrasnow.com then install
add sources:http://repo.iparelhos.com(ultrasnow fixer) then install

to fix no service problem:
just install ipad baseband again using redsnow_win_0.9.15b3
the just boot tethered