MANY USER'S FACING THIS PROBLEM BUT YOU CAN EASILY CHANGE YOUR IMEI WITHOUT ANY BOXES OR CABLE.
First Install (Term.apk) This Application In Your Device .
DOWNLOAD Term.apk
Now Run It & Type This Command By Your Hand.
echo AT+EGMR=1*7*IMEI_1 >/dev/pttycmd1
echo AT+EGMR=1*10*IMEI_2 >/dev/pttycmd1