[otb 1.1.2]no Service/no Signal Fixed!!!!
For all of you that after the unlock had NO SERVICE I found a solution after 3 days and is working like a charm.
This is what I did.
1.- Update to 1.1.3 (Version 1.1.3 Modem Firmware 04.03.13_G)
2.- Use ziphone 2.0 with options -a -j -v
By now your iphone has the last version 1.1.3 and the modem firmware 04.03.13_G
3.- put the iphone in DFU mode (the black screen)
4.- with itunes 7.5 shift+restore to 1.1.2 (it will give you an 1015 error)
5.- use ibrickr_v0.91 to boot the phone (green screen so you have to restore throu itunes again)
6.- dont touch the iphone just restore again to 1.1.2
7.- use ibrickr_v0.91 again to boot the phone (this time red screen and it will boot)
8.- Ziphone -a -j to activate the phone (it will say that you have an incorrect sim blah blah)
By this point if you check in Settings->General->About you'll see that you have version 1.1.2 and the Modem Firmware is 04.03.13_G
then comes the easy and magic part
9.- Ziphone again but with options -u -v and wait for it to boot and you'll have a signal
NOTE: in step eight I had the SIM that came with the iPhone in the phone and it also gave me the message Incorrect SIM, change it to my SIM and the message appeared again, so I recommend that you do this with the SIM that came with the iphone and after step 8 change it for your's.
I hope this will help you all with the NO SERVICE issue, it worked for me.
now i'm going to do a soft upgrade to 1.1.3 and see what happens.
gl / hf