Is there any way to flash ROM in RAMDUMP mode?

[AC Question]

I have a Samsung GT-S6312. The phone is not starting up. It is also not booting into any recovery modes. Only RAMDUMP mode comes. I have tried every possible combinations of buttons / battery plug unplug etc to bring the Recovery or Download mode throughout last 7 days. Nothing works. Now the only way is to flash the ROM in the RAMDUMP mode itself. Is there any possibility to make this happen with help from the experts here?

N.B. I tried flashing using Odin in RAMDUMP mode. Odin detects the comport. But when I start the flashing, it gets stucked at "setupConnection" step forever.