Does anyone know where i can download the latest firmware for my SGS4 GT-I9505?
Yes, you need to register but it's well worth it.
Firmwares | SamMobile
I don't see any for the S4 on their site,
You need to type the model number on the top right of the screen - frontpage is just a ticker with the latest firmwares ...Samsung Updates | Latest News and Firmware for your Samsung Devices! is another one.
I just checked this site and it says MDL is the latest. But MF3 is actually the latest for the i337-US version.
This site also offers MDL as the latest version for the i337 instead of MF3. I wonder why they are a version behind?
If you are ever likely to want to install a custom ROM on your phone be careful.
The latest Samsung ROMs have locked bootloaders and Knox security that will stop you re-installing a stock ROM if you install have installed a custom ROM after installing the ROM with the locked bootloader.
More information can be found in ironass' useful post on the topic in the rooting sub-forum.
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