Trying to update from 1.8 to a 2.1.0 release


I recently reinstalled FreePBX on one of my servers, usually I would use a ISO for a network install, however this time I had to use a full ISO. Apparently, it was extremely outdated upon install, I believe it is a 1.8 system however I do not know how to check this on the older FreePBX variants. I would like to update to FreePBX 2.1.0

Additionally, I have never done a FreePBX update before, so I am also lost on that aspect.

Any help would be greatly appreciated, and if there are any commands you want me to run or information to grab from the system let me know. Sorry about being short on info, but this old web GUI is confusing, and I don’t know how to check the version via CLI either.