my iphone 4s is trapped into recovery mode & i cant get my phone out of it!

Recently I Buy A iPhone 4s.after 1 day use,i reallize that my phone have no panorama.so after that i take some picture and record a video.then i moved them into my pc.but then i saw my picture quality is 5mp and video is 720p.then i inform to someone and he told me,'may be this is for your ios version.you should update your ios version 7.0.6 to 7.1.1.then i tried to update my phone..but updating&restoring was running then i get into sleep.after some time i woke up and saw my phone is trapped into recover mode..then i reconnect my device into itunes.but now itunes is showing me that my phone is iphone 4.but some time ago itunes showing me this is a 4s.then i take it to the iphone mechanic and he told me this phone wont be alright.this phone's mainboad is damage.then iii tried hard to turned my phone into normal mode..i saw every vedio on youtube,and i used every software to made my phone into normal mode.but nothiing is work on my phone...i download some .ipsw file of iphone 4 and 4s ios 7.1.1.i tried to restore my phone with shift key/button with ipsw file.but every time it cancelled when restore is 75% done and also everytime restore is cancelled when firmware is installing.and it says me "THIS PHONE CANT BE RESTORE.AN UNKNOWN ERROR OCCURED.(3194)"

so i think my phone's firmware file is broken...or my phone is dead

so if anybody is here,who can solve my problem, plz help to solve my problem

i used my phone only 1 day after i bought it and i bought this phone with a big costs.

THANK YOU!!