I've heard that with the modern jailbreaks you want to use RootFS.
Normally, my method is to backup, put my device in DFU mode and restore/upgrade. Then I restore from the backup. But RootFS is what I hear you should start with now.
They dont always work the bypass methods, i did a jailbreak for the first time in ages and tried various bypass tweaks but still couldnt access a couple of banking apps, Sky Go and the VOIP app i have for working from home. I restored before trying many others.