Yes, download 1.8.x and then upload all of the files from the upload folder into the root of your FTP server.
From there, go to your website (with /install at the end) and follow the instructions.
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Upgrading mybb 1.6 -> 1.8 ?
Submitted by redd, 19-09-2015, 11:05 PM, Thread ID: 10242
Thread Closed
RE: Upgrading mybb 1.6 -> 1.8 ? 19-09-2015, 11:08 PM #2 yeah
19-09-2015, 11:08 PM
#2 yeah