About to BRICK device - still in EmergencyDownloadMode

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Hello, I really need your help, please!
I tried to upgrade my firmware in order to get Mango with the German firmware dz file. But while flashing the Firmware it stopped at the point "WM writing" at 62% with an "ErrNum4008 RAM PROGRAM".
I tried flashing again with the Europe dz file, but that didn't work either. I also tried flashing with USB 1.1 and USB 2.0. Both doesn't work.
My phone is still in the EmergencyDownloadMode. I didn't try rebooting yet, because I'm afraid of seeing it not turning on again! Please help me fast! I'm about to brick my LG Optimus 7 E900!
Thanks!