Just click update in itunes. When the update finishes jailbreak with taig. The jailbreak will fail the first time at 60%, so close the taig app and jailbreak again ... the second time will be successfull. Then in cydia reinstall all of your tweaks by queuing - the config files for the tweaks will stay as it was on 8.1.1. Job done - very easy and takes approx 30 minutes
The old jailbreak is not removed from the system, so the config files for all the tweaks stay in your idevice. When you reinstall them in cydia they will just use the old settings files ( for example if you use some icon tweak, after installation it will put all your icon back as it was on old jailbroken IOS)
That is a terrible advise and jb devs will tell you not to do what the user states above.
Do not update a jb device.
Fully restore it with itunes. Then jb and install your jb hacks.
If you follow the above idea instead you are looking for trouble and taking a risk. Don't do it. Fully restore it.
Adding to this: if you do an iTunes update on a jailbroken device, you will lose all the space associated with the previous JB, usually 0.5-1 GB. That space cannot be accessed again until you do a full restore. Another reason to do a full restore from the get-go.
What does full restore mean? Manually download the IPSW and then shift click on the update button and select the IPSW?That is a terrible advise and jb devs will tell you not to do what the user states above.
Do not update a jb device.
Fully restore it with itunes. Then jb and install your jb hacks.
If you follow the above idea instead you are looking for trouble and taking a risk. Don't do it. Fully restore it.
What does full restore mean? Manually download the IPSW and then shift click on the update button and select the IPSW?
oh crap. I updated and pointed to the IPSW.No, you don't have to manually download the .ipsw
Just plug it to itunes and hit restore.
Just not update.
Restore will delete everything on your phone and install a full version of the latest ios version.
Then you can JB and restore from backup to put your things back.
oh crap. I updated and pointed to the IPSW.
Is it to late to do a restore now?