Apple just released its latest iOS 8.1.3 update yesterday. While it debugged many little bugs found earlier, several users have found that the latest update can not be jailbroken either.If for any reason you wish to downgrade iOS 8.1.2, here are the steps and direct download links to save you out.
Downgrade To iOS 8.1.2 On iPhone iPad And iPod By Following These Steps
So if you'd rather prefer your device jailbroken, then downgrading to iOS 8.1.2 is the only option you have until we see jailbreaking tools become available for Apple's latest software update. Before beginning the process however, make sure you have updated your device to the latest iTunes. Download appropriate iOS firmware file for your device and follow the steps highlighted below.
Connect your Apple device to your PC and wait for iTunes to open and connect to your device.Click on the device button in iTunes and hold down the Alt / option key (Mac) or shift key (Windows) and click Check for Update button in the Summary pane.From the download links shared below, download the appropriatefile. Locate the same .ipsw file downloaded from links and select it.In case you don't see any new version to downgrade to:create a backup, and then put your device into DFU (Direct Firmware Update) mode. DFU will help you install whichever OS you want to.
Here's a list of relevant iOS 8.1.2 firmwares for your iOS device.
iPad Air 2 (6th generation WiF)iPad Air 2 (6th generation Cellular)iPad Air (5th generation WiFi + Cellular)iPad Air (5th generation WiFi)iPad Air (5th generation CDMA)iPad (4th generation CDMA)iPad (4th generation GSM)iPad (4th generation WiFi)iPad mini (CDMA)iPad mini (GSM)iPad mini (WiFi)iPad mini 2 (WiFi + Cellular)iPad mini 2 (WiFi)iPad mini 2 (CDMA)iPad mini 3 (China)iPad mini 3 (WiFi)iPad mini 3 (Cellular)iPad 3 Wi-Fi (3rd generation)iPad 3 Wi-Fi + Cellular (GSM)iPad 3 Wi-Fi + Cellular (CDMA)iPad 2 Wi-Fi (Rev A)iPad 2 Wi-FiiPad 2 Wi-Fi + 3G (GSM)iPad 2 Wi-Fi + 3G (CDMA)iPhone 5 (CDMA)iPhone 5 (GSM)iPhone 5c (CDMA)iPhone 5c (GSM)iPhone 5s (CDMA)iPhone 5s (GSM)iPhone 6iPhone 6 PlusiPhone 4siPod touch (5th generation)
Important:Apple doesn't support downgrading to older firmware builds. This method will only work until Apple signs the iOS 8.1.1 firmware, which will likely happen very soon.