For several repeater hardwares, the firmware allows Over The Air firmware updates via WLAN.
In many cases this is not really feasible: Combination of a repeater at some remote location together with bad WLAN antennas of the nodes make many of them not reachable via WLAN (i.e. on top of a 22 story building).
I hereby feature wish that OTA firmware upgrades are also possible using LoRa -- maybe using temporary radio settings which allow higher data transfer rate at the cost of distance.
Regards!