mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system
sed -i 's/ro.ril.hsxpa=1/ro.ril.hsxpa=2/' /system/build.prop
sed -i 's/ro.ril.gprsclass=10/ro.ril.gprsclass=12/' /system/build.prop
echo "ro.ril.hsdpa=8" | tee -a /system/build.prop
echo "ro.ril.hsupa=5" | tee -a /system/build.prop