Which phone model du you have?
Rootet or not?
You can install the newest firmware yourself with Odin if you want.
This is a guide for i9505 and i9500 so check you model before flashing
Gesendet von meinem GT-I9505 mit Tapatalk
Sorry for stupid questions, but when i extracted the .rar, i got 4 different files. Should i select the largest one? I'm asking, because "Step 5) click on pda in odin (if odin 3.09 choose AP) and choose the file ".tar"". And if my phone is 16gb, i don't need any extra steps or something?