How do i undo an update?

[Android Central Question]

Since my update, things are different. When I respond to a text, the font window gets small and I can't read it.

 

[Rukbat]

You flash the previous version of Android, there's no "reverse update" path. Since the ROM you're flashing doesn't have any of your files in it (apps, pictures, videos, music, etc.), back up everything first (see Backing up an Android Device).

How you flash a ROM depends on the make of phone you have.