I have just a few old(er) phones (S8+, Note 9) that I wondered if its worth/able to root/upgrade the OS .. from Android 10 to 11, 12, 13 .. only 4G, but thought of maybe using one as a music server to put in the car? Didnt know if this was better here or in the Android group .. Just wondering if rooting was easy enough to upgrade the OS?