Unhappy NAND write start fail on a bricked phone! Please help!

Hi, I have the following issue with my Samsung Galaxy Ace 2...

I flashed a CM10.2 ROM and it worked fine, but later I decided to return to stock ROM. I performed factory reset and all data wipes, and flashed the rom via Odin.

Then my phone became bricked, no restarting, just freezes on the Samsung booting screen. I can't go into recovery mode, and I can't flash any recovery I tried because Odin gives me NAND Write Start Fail.

The strangest thing is I can flash any ROM without a problem, but it doesn't seem to make a difference.

Please help me, I need that phone working because I use it pretty often and have no one else to turn to.