I am using litecoinj which is forked from bitcoinj but compared to bitcoinj, the wallet creation and block synching is slow when using litecoinj. So, I searched for a solution and found a post that suggests to download checkpoints in a file and pass the file while creating wallet, but I guess it's not working.
kit.setCheckpoints( new FileInputStream("checkpoints"));
How can I speed up the syncing of litecoinj?