It can find some previous posts about how to convert R710 from unleashed to standalone. I tried set the R750 unleashed to factory default and then using upgrade via web gui but it says R750_220.127.116.11.1392 is not a valid images. would like to find some helps here. Thanks
If this just one AP on Unleashed network then yes, you can flash it to standalone version from Unleashed GUI directly (Ignore the warning). However, if there are more than one AP, then only existing master AP will be flashed and rest of the APs will still work as Unleashed (current master will be out of existing Unleashed network due to firmware mismatch and any other available member AP will become master).