iphone 3.1.2 baseband (firmware) 05.11.07 jailbreak and unlock tutorial

there is just too many informations and blog posts out there about this topic!

here is the case:

the iphone:
apple iphone 3g 16gb white (bought 2008) with sim-lock (to one provider) was never jailbreaked or unlocked and always updated. latest firmware: 3.1.2 and baseband 05.11.07.

the goal:
just unlock it! so it’s more worth when selling, jailbreak yes or no, does not matter actually!

i looked around and found blackra1n.com and so much informations about this (baseband downgrade to 04.26.08 necessary with fuzzyband and much more outdated nonesense…)

here is how it works:

1. plug in your iphone to your pc or mac (and close itunes and/or other popping applications)
2. download blackra1n from blackra1n.com
3. run blackra1n
4. click “make it ra1n”
5. after your iphone rebooted, open the blackra1n app on your iphone
6. click Cydia (it should become the green check) and click install
7. after your iphone rebooted, open the blackra1n app on your iphone
8. click sn0w (it should become the green check) and click install

this is it. period. insert any sim card and have fun using your iphone and feel free installing other cydia or rock applications!

bottom line:
blackra1n RC3 dows it all for you – no need for downgrades or other stuff!

a screenshot of blackra1n RC3:

blackra1n RC3 iphone screenshot

firmware download links for 3.1.2:

• iPhone 3.1.2 download (iPhone1,1_3.1.2_7D11_Restore.ipsw, 241 MB)
• iPhone 3G 3.1.2 download (iPhone1,2_3.1.2_7D11_Restore.ipsw, 242 MB)
• iPhone 3GS 3.1.2 download (iPhone2,1_3.1.2_7D11_Restore.ipsw, 306 MB)

read more:
iphonejtag.blogspot.com
www.technonix.com
www.ihackintosh.com
www.redmondpie.com
www.technobuzz.net