iPod Touch 3G stuck on apple logo, please help!?

Okay so I updated Appsync to Appsync 4.2 on my iPod Touch 3G 4.0 via Cydia. Now it is stuck at the boot logo, I tried holding both buttons down and it reset but it still won't go past the boot logo. I can't even put it into recovery mode, please help!
It's an IPOD TOUCH 3rd GENERATION, and I tried DFU mode but it won't let me.
 
Back
Top