3gs iPhone2,1_6.1.6_10B500_Restore untethered jailbreak & unlock
1) Restore your device with iPhone2,1_6.1.6_10B500
2) Jailbreak
2.1) Open redsn0w_win_0.9.15b3
2.2) Go to extra
2.3) Go to select ipsw
2.4) Select iPhone2,1_6.0_10A403_Restore
2.5) Back
2.6) Jailbreak
2.7) Next, follow the instructions to enter dfu mode
2.8) Check install cydia & install ipad baseband
2.9) Wait until jailbreak done
3) There will be no cydia in your device
3.1) Open redsn0w_win_0.9.15b3
3.2) Go to extra
3.3) Go to select ipsw
3.4) Select iPhone2,1_6.0_10A403_Restore
3.5) Go To Just boot
3.6) Follow the instructions to enter dfu mode
4) after device on u can see cydia
5) Open Cydia.
6) Click the "Changes" tab in the footer.
7) Press the "Refresh" button in the top left corner.
8) After "Reloading Data", perform a search for "p0sixspwn" (the O is a zero).
9) Tap Install.
10) After installing p0sixspwn your device is untethered
11) Install ultrasnow 1.2.8
1000% network done