I did an update using the first option under admin "Upgrade 12 to 13", It does system check and it passed. I didn't watch the whole process but the last line was successful.
After I remove the backup all other modules updated successfully. The I click Apply Config and everything seem to be fine. Backup is still uninstall
Currently PBX Firmware: 6.12.65-31 PBX Service Pack: 1.0.0.0
I guess my next step is to apply 10.13.66.-
wget http://upgrades.freepbxdistro.org/stable/10.13.66/upgrade-10.13.66-1.sh
chmod +x upgrade-10.13.66-1.sh
./upgrade-10.13.66-1.sh
Once this is apply then I can continue with SysAdminPro to do the update via web
Will wait for your confirmation before I proceed. Should I install backup before upgrading to 10.13.66?