I can flash .pit files, in my case the GT-I9300_mx_20120220.pit for the 16 GB variant (passes in various ODIN versions). However, when I start flashing a kernel, firmware or recovery ODIN 1.03, 1.83, 1.85, 3.04, 3.07, 3.09 get stuck at NAND Write Start!!
I can't get into recovery, previously had TWRP 184.108.40.206.
I've tried flashing: stock firmware for my phone, Siyah, CM 11 M5 Snapshot (which previously worked)
Any and all ideas welcome! PLEASE HELP!