Cannot get out of recovery mode

I use the iPhone 4S for like a year, when I tried to update, it failed and now stucks at the recovery mode
I have tried several tools, reset by hand... but doesn't work, I can't neither do the restore on iTunes, I also tried with different cables, different PCs, same result. Now i don't know what to do more ...

It's 4S, on firmware 5.0.1 (I think), unlocked, jailbreaken iPhone

Any suggestion?