Where do i find the update files?

[Cromagi]

Where do i find the update files for kitkat or the new lolipop for samsung galaxy S3 from straight talk? Post links please! Latest version i can get !!! (SCH-S968C)

 

[Rukbat]

SamMobile Firmwares and put in the model number (not S3, the ixxx form of model number from the label under the battery). You'll see the available ROMs. Choose the latest one for the carrier your phone was originally built for. (IOW, if it was an AT&T phone, even though you unlocked it and use a Straight Talk TMobile SIM, you use an AT&T ROM.) Use Odin to flash the ROM.

 

[Cromagi]

I am not rooted. I am using a straight talk phone that has not been unlocked. Is this safe to do?