Default [Q] GT P3110 soft brick, download mode but no recovery, bootloop

Hi All,
I have a GT P3110 that was rooted. I tried to install a custom ROM, but I didn't succeed, because since first reboot it arrives till "Updating Android", optimize all the apps, and straight after "opening applications" it reboots - as in the title - in infinite loop.

I can access download mode, and I tried very various solutions (all through Odin, in different versions), but none of firmwares i tried unlocks the situation, neither does any flashed recovery open. Just the download mode (that still let me hope for a solution).

I read a lot of threads about, but nowhere I found a solution; I tried even to Erase All Nand, but it failed.

I really dunno what else could I do, has anyone solved a similar problem, or has an idea of how could I unlock the situation??