Unlockers and jailbreakers, get your custom iOS 5.0.1 firmware here. Custom firmware ensures that your baseband is always preserved for unlocking.
UPDATE: Untethered, jailbroken, hacktivated iOS 5.0.1 can be downloaded here. If you have an AT&T iPhone, unlock it right here.

Wait – before you update to iOS 5.0.1, read this warning from MuscleNerd.
These custom firmware were made using sn0wbreeze v2.8b11 [download sn0wbreeze-v2.8b11.zip for Windows only] and they will ALWAYS preserve your baseband.
Preserving your baseband allows your iPhone to be unlocked with supported software such as ultrasn0w or hardware e.g. Gevey Turbo SIM for iPhone 4.
Even if you don’t intend to unlock it now, preserving your baseband will increase your iPhone’s resale value. Your potential buyer may want to unlock it.
Since the jailbreak for iOS 5.0.1 is still tethered, you will need to use iBooty or redsn0w to boot your device to a jailbroken state. If you’re new to restoring your iPhone with custom firmware, please be aware that you will need to pawn DFU your iPhone first to allow it to accept custom firmware. Use redsn0w or iREB for this.
Be sure to install the iTunes 10.5 in order to install custom iOS 5.0.1.
Custom iOS 5.0.1 Jailbroken (tethered) and Hacktivated (use this if you DO NOT have the official carrier SIM card)
iPhone 4 (GSM) sn0wbreeze_iPhone 4-5.0.1_hacktivated_jb.ipsw
iPhone 3GS New Bootrom sn0wbreeze_iPhone 3GS-5.0.1_NBR_hacktivated_jb.ipsw
iPhone 3GS Old Bootrom (untethered) sn0wbreeze_iPhone 3GS-5.0.1_OBR_hacktivated_jb.ipsw
Custom iOS 5.0.1 Not Jailbreaken, Not Activated (official carrier SIM required)
iPhone 4 (GSM) sn0wbreeze_iPhone 4-5.0.1_noJB.ipsw
iPhone 3GS sn0wbreeze_iPhone 3GS-5.0.1_noJB.ipsw
Note for iPhone 4 and 3GS unlockers:
- iPhone 4 – Gevey Turbo SIM works with iOS 5.0.1 as long as you don’t have baseband 4.11.08. Please share this information with your friends! Many people updated to iOS 5 and lost their unlock!
- iPhone 3GS – ultrasn0w 1.2.4 is not yet ready for iOS 5.0.1. The latest baseband that comes with iOS 5.0.1 is also 5.16.05 (no change from iOS 5.0), and there’s no way to unlock it. Note that the latest ultrasn0w only supports older basebands.
If you like these custom firmware, be sure to click on Like below or Recommend on Google +. Have a good weekend!

