I originally had my unlocked S3 running 4.1.2 and upgraded to the original buggy 4.3. I decided to root it and installed Cyanogenmod but really didn't like it. I tried putting 4.1.2 back on it ended up screwing the IMEI and had to pay to have it reset and have 4.1.2 back on. Instead of upgrading to 4.3 or anything is it possible to get a non-branded version of Android I can put on there? One with non of the usual carrier/manufacture bloatware?