Location [Q] Stuck at First screen

I had a stock 4.1.2 firmware at the beginning

I flashed aosp roms and got stuck on them and couldnt get back to stock-based roms

anyhow, I got advised to flash a stock firmware through odin
and I did, it was 4.2.2
and it was successful according to odin

but I only got that screen that is all about "samsung galaxy duos..." and the phone turned back off then that screen then off

I couldnt access recovery
I couldnt flash another recovery
I couldnt flash another firmware
all failing

and I'm getting that "!!!!!!!!!!!!!!! current eMMC firm version [ ]!!!!!!" in download mode

any suggestions ?
Just NEW HERE