so is there a question in your rant? sounds like most of it can be just redone again......but you say you can't change anything....emojis will always slightly change with each update.....same thing with fonts. your notifications and ringtones you should be able to reset them up again. your power on/off button changed? what does that mean? your text messages look different? how so? maybe try a different messaging app.

 

The update CAN definitely be undone, if you want to go back to the previous version

 

how do you go back?