If you haven’t updated to iOS 8.1.2 yet, it’s time you did as Apple is no longer signing the iOS 8.1.1 firmware. Those who are enjoying a jailbreak on their iOS 8.1.1 devices, should update to iOS 8.1.2 and use the TaiG 1.2 tool to jailbreak.
It’s always better to be on the latest iOS firmware and there have been reports of Apple releasing another minor iOS 8.1.3 update. If you’re still on iOS 8.1.1 when iOS 8.1.3 is released and that patches the TaiG jailbreak, then you won’t be able to update to iOS 8.1.2. You’ll lose the jailbreak and will have to update to iOS 8.1.3. That’s not likely going to happen, but it’s better to be safe than sorry.
You can update to iOS 8.1.2 using the OTA method from General>About>Software Update. However, we recommend that you download the iOS 8.1.2 IPSW file and do an update using iTunes. This is a much better method if you’re planning on jailbreaking using the TaiG 1.2 tool on Windows.