Stuck cannot update ios or boot back into it
I have a macbook pro 15 inch mid 2010 and have upgraded it to high sierra. I got a security update 10.13.6 rebooted to install and got an error that file encryption was working. I checked on status in terminal and it says paused. I cannot reboot into my computer to unpause. Help! Thanks.
MacBook Pro 15″, macOS 10.13