Redsn0w 0.9.14b2 was released with new features and update. Dev Team expecting feedback from user who facing error with b2 version. This can be use to update Redsn0w 0.9.14b3 version. They have added new features with b2 as we mentioned.
Dev Team has released b1 version with baseband downgrade feature. More Details about Redsn0w 0.9.14b1 version
Some users face errors with downgrade and they fixed this issue and b2 released July 4th by additing additonal useful features - More Details about Redsn0w 0.9.14b2 version
Dev Team member MuscleNerd ready to give feedback for your problems with b2. This will guide to develop Redsn0w 0.9.14b3. Following screenshot from MuscleNerd Twitter account about b2 feedbacks.