Ok this has been resolved =). I downloaded the tar.gz file based off the github link you provided and renamed it to payloads-sync.tar.gz. I found, however, that after copying the tar.gz over using SCP and running UPDATE_PAYLOADS the tmp folder was getting cleaned first, deleting the tar.gz that I uploaded. SO I then SSHed into the sharkjack and I found the UPDATE_PAYLOADS script under /usr/bin. In the script it was wiping the tmp directory so I commented out those lines, and I also commented out the line where it attempted to download the file from github. I saw on another post that someone else was having this same problem and they believed it had something to do with github security certificate. He stated he added the -k flag but this did not seem to help me. So I copied over the tar.gz file again and re-ran the script and it worked this time.
So all in all, I am posting this for anyone else having problems.