I have a similar problem. I installed condi's hack with the auto installer and my x930 rebooted to a black screen. When I put an SD card it it restarts like it's doing something but that's it. It will not accept any other forms of input. I can not get in to hackmode or testmode. Any suggestions?
EDIT* disconnected the battery to disconnect the constant power for a "full" reboot. Was able to get back in to testmode and repair using your copy/paste method.