You won't "brick" your AP Craig, with any Factory Default (press indented button 8+ seconds before release). AP's IP will always revert to 192.168.0.1 and login with super / sp-admin to access HTTPS/SSH.
But, our latest 200.7 Unleashed does not have an easy change FW option (I filed the bug and it's fixed in 200.8 just around the corner). So for now, try an earlier flavor of Unleashed for your R710, or any later (104.x) Solo AP image, if you want to use one.
The first time I tried to convert a R710 from standalone to unleashed I hadn't found the related support doc yet (https://support.ruckuswireless.com/articles/000005720) and did not do a factory reset before uploading the unleashed firmware. The upgrade failed with a cryptic error about memory. I was certain it was bricked but I just pulled it out of storage and let it sit with power for awhile and it booted 18.104.22.168.1347!
When I ssh into it running "fw check image2" reports "v54_fw_check(2), bad header magic"
This is cool, I can here with one problem and fixed two!