Unable to flash 2016-11-29-debian-8-jessie on to emmc

Tried flashing the 2016-11-29-debian-8-jessie-lite-beta2-bpi-m2u-sd-emmc.img on 8GB Bpi m2u. Failed with error message saying not enough space. how to fix the issue and proceed further.

root@bpi-iot-ros-ai:/media# unzip -p 2016-11-29-debian-8-jessie-lite-beta2-bpi-m2u-sd-emmc.img.zip 2016-11-29-debian-8-jessie-lite-beta2-bpi-m2u-sd-emmc.img | dd of=/dev/mmcblk1p1 bs=10M

dd: error writing ‘/dev/mmcblk1p1’: No space left on device 0+78990 records in 0+78989 records out 7817134080 bytes (7.8 GB) copied, 1061.15 s, 7.4 MB/s