Before I mess around anymore, I figure it would be a good idea to get a backup of the firmware, to store on the sd-card, in case something goes wrong.
I just can't figure out what to do... The method I found so far, says the bootloader has to be locked, since it requires Sony Update Service.
Another method that I saw mentioned was using Flashtool to create a backup, but I can't seem to find that option. It also mentioned some files that I need to push, before backing up, I don't quite understand which files and what to do.
Can someone help me how to make a complete backup up of the system, that I can restore in case something goes wrong when I start flashing?
If possible I would prefer the system only, not all the apps that I installed, but if that's not possible, it's fine.