Youyeetoo Leetop subkit Nano boot fail

I was trying to increase the swap memory for youyeetoo Leetop subkit Nanoe with the below commands:
sudo fallocate -l 4G /var/swapfile
sudo chmod 600 /var/swapfile
sudo mkswap /var/swapfile
sudo swapon /var/swapfile
sudo bash -c 'echo “/var/swapfile swap swap defaults 0 0” >> /etc/fstab’

However, the allocation failed due to memory size limitation, since then the youyeetoo Leetop subkit Nano is failing to boot with the error:
Any help to recover the board will be much Appreciated!

Please reflash the firmware.

If you are allocating space from emmc for swap memory, make sure it is sufficient.