p5110 no write access on internal sd

Hi all ! I have a bit of a problem...My internal sd is kinda blocked in a "read" state. Neither the (rooted) system, me, odin, nor windows can write or delete anything. When I flash a new rom or a new recovery, it looks like it succeed, but when the tablet restarts it's at the same state as it was at a t instant. This means I'm blocked on Philz 6.0.x and Slimkat with a few apps and pictures. As the system can't write, the tablet freezes and reboots after a few minutes of usage. I've tried tens of methods trying to reinitialize the rom or flashing a new rom, I've even tried a Nand erase all, flashing a pit file, but whatever I do, it's stuck on the same rom with the same apps. Wipes are shown as successful but actually wipe nothing... It looks like the internal sd is dead. Note that I've formated and pulled out the external sd so the problem doesn't come from it. Has anyone faced once such an issue ?
Sorry for my english...

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