Ubuntu Error updating uboot

[jandvs]

I booted ubuntu on my Pine 64+ 2GB per this guide. I used the Ubuntu Base Longsleep download.  It booted just fine, but when i try to run the command to update uboot, i get this error.  The pine is connected to the network via cat-6 cable.  I can ping google.com and i can SSH to the pine from my desktop, so I know it's got a good network connection.

Code:

ubuntu@localhost:~$ sudo -i
[sudo] password for ubuntu:
root@localhost:~# /usr/local/sbin/pine64_update_uboot.sh
Checking for update ...
Downloading U-Boot image ...

curl: (56) GnuTLS recv error (-54): Error in the pull function.

root@localhost:~# /usr/local/sbin/pine64_update_kernel.sh
Checking for update ...
Downloading Linux Kernel ...

curl: (56) GnuTLS recv error (-54): Error in the pull function.
root@localhost:~#

Any ideas?