Q: iPhone stuck in recovery mode after failed JB

We are not allowed to discuss jailbreaking in these forums (and this thread is likely to disappear). By doing this you have invalidated your warranty, and you are on your own.

This is the danger of jailbreaking; that it can permanently brick your iPhone. If you can't even get the iPhone into DFU mode, then you're probably out of luck, but you can try asking for help on the web site for the jailbreak you used. As Roger said, we can provide no assistance here, nor will Apple have anything to do with that iPhone now.

Good luck; you'll need it, I fear.

Ricky ~ Welcome to the Support Communities. This Apple doc may be of interest:

Unauthorized modification of iOS can cause security vulnerabilities, instability, shortened battery life, and other issues