Big problem with my htc one v!!....need help :-(

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http://forums.androidcentral.com – Actually i was installing jellybean update for my htcone v gsm via cyanogen mod...now after flashing boot file i rebooted my device directly without putting jelly bean update zip in the sd card . My phone is now stuck on htc logo white screen saying "this build is for devolopment purposes."....I cant even get the boot menu by pressing power button and volume down. I really need help...I cannot get my phone to start. thanks Abhishek (HowTos)