Default bird t40 mt6572 build.prop edit soft brick

i edited my build.prop so as to increase the sensitivity of the phone and the rebooted, my phone the stopped at the boot logo. pliz if you have a working build.prop or the firmware can post it to enable me recover it.some of the phones info includes;
model: bird t40
manufacturer: alps
firmware: mt6572
android: 4.2.2
connection: dual sim, wifi, bluetooth, 3G
memory: 4gb
more info can be found on
Thanks in advance