You mean in the old web app ? I can’t see it on Phoscon …
If I m right it enable automatic OTA but only for router (the procedure is heavy for sensor, can be bad for battery).
You just need to put your firmwares file in the OTAU folder
ZigBee firmware is identified by the Manufacturer Code, Image Code and Version. On startup, the STD OTAU plugin will read all
*.ota,*.ota.signed,*.sbl-ota, and*.zigbeefiles in~/otau, and copy them to mmmm_iiii_vvvvvvvv.zigbeefiles, matching these attributes.