Originally Posted by mielletseed
You don't need twrp or cwm if you don't want to backup (and restore) the demo ROM. I installed a (modified) stock ROM without custom recovery and so without tripping the KNOX flag.
The tar file I prepared completely without cygwin or such tools.
You will just need a clever program that can handle archive files. I just used Total Commander, opened the TAR file, deleted the unwanted content and flashed it with ODIN (it seems to me at least 3.09 is needed).
Thanks for your great post.I have now a proper working SM-G900F insted of SM-G900X
For others who wish to follow the steps,
1. use odin 3.09
2.Download stock ROM SM-G900F
3.Unpack ROM using Total Commander
and remove everything except these files:
4.Repack these files again with Total Commander in .tar formart and name it "ldu900x.tar"
5.Turn off your SM-G900X and go to Odin Mode Downloading... and flash it using Odin.
6. After resart make a factory restore to have everything. Even your Model number will be SM-G900F
Note: Sim will not work, but it will show/ask you to put a sim card.
everything else works perfect.