Just make sure to create a list or take a screenshot of all your jailbroken apps and Cydia downloads so you can go back and get them once a i OS 8 jailbreak method is released.
Also, OTA updates are usually not available for jailbroken phones, so you'll have to update via i Tunes.
If you choose the latter option, you will receive such reminders every day until you install the update.
You can go to the official website of Apple Developer Center to download i OS 9.3 beta 6 or i OS 9.2.1 firmware to upgrade your i Phone system to get i Phone out of recovery mode,this is a pre-release version of i OS 9.3 for i Phone, i Pad, and i Pod touch,after upgrade your i Phone to i OS 9.3 or i OS 9.2.1,it can not be restored to earlier versions of i OS.
Just in this free way to fix your i Phone stuck in recovery mode.
When Apple releases a new firmware for i OS, the update gets downloaded automatically on compatible devices, ready to be installed.
Although you can ignore this if you want, some updates consume a large amount of space on your device especially if it’s a major release.
This also saves a considerable amount of space on your device.
To find out how to delete a software update from your i Phone, i Pad or i Pod Touch, follow the steps below.
Today I downloaded & tried to install the new i OS 9 on my i Phone 5s.
After having an error stating that the download of i OS 9 could not be installed, I started to worry. This worked, but then it could not install because I couldn’t backup my i Phone.
Select the i OS 8 IPSW firmware you just downloaded. Click Restore and wait for i Tunes to work it’s wonders.
The first beta of i OS 9.2.1 was released a month back, and now Apple has seen it fit to release the final build to the public on this very date.
It's essential to back up your i Phone and/or i Pad every time you update the device's software. Follow this guide on backing up, restoring, and updating your phone and tablet.