Good phone (lg su640) repair in sadar karachi?

hello yar mera cell during flashing hadrd brick mode m chala gya ha. and wo na on hota ha or na hi downloading mode me jata ha , jb usy laptop se connect kro to connecting ki awaz ati ha or Qoulcomm HS-USb dloader port show hota ha. me ne youtube m iska solution search kia to wo JTag device se is msly ko sort out krty hen. kia kisi ko pta ha k sadar karachi m knsi shop itni capable ha jo Jtag device use krti ho? PLZ help me