1: minor rev(2) fixes a minor issue where when the log is empty (i.e. no data at all), it gives a ‘error retrieving log’ error.
2: the address is x.x.x.x/update, not x.x.x.x/upodate. Also, OTA update is ONLY supported when the controller is in WiFi mode, it’s not supported if you are using wired Ethernet module. This is already explained in the firmware update instruction: