BlackRa1n to Ultrasnow 1.2
Hi, I have a 3GS jailbroken and unlocked using BlackRa1n and its currently on OS 3.1.2 and baseband 05.11.07 I am a bit confused on this tutorial, so please help me with these questions 1. Do I need to install both redsnow and ultrasnow 1.2 to get an unlocked 4.21
2. Do I have to first uninstall BlackRa1n on my phone to restore it to any previous condition or should I just download 4.21 , use first redsnow and then ultrasnow?
3. Do I need to upgrade my baseband to 06.15 or should I let my baseband remain at 05.11.07?