Try this MK2 modem.bin, a lot of people used this already including myself and it worked!
Flash using Odin's PHONE slot. (NOT PDA)
Do not connect the usb cable until step
1: Open Odin and put this MODEM.BIN file into Odin's PHONE slot & un-check "auto reboot"
2: Power off the phone manually
(power button only)
3: Restart the phone in download mode (power+vol-down)
4: Connect USB cable from phone to computer
5: Make sure that Odin's [COM:xx] lights up
6: Click START in Odin
7: When done unplug the usb cable
8: Power off the phone manually
using power button only
9: Wait 20 seconds or so before powering up the phone.
If you followed these step by step instructions you should
see MK2 in "About Phone" (Settings>More>About phone)
It does not matter which version of ODIN you are using, all ODIN versions work fine.