uRADMonitorDelay check might help at least to exclude packets coming too early, so we could have this among other mechanisms.
PKI would be excellent, but probably impossible for the reasons you’ve mentioned, but also because it requires a relatively complex code, and the available memory is low.
We also need to think of a solution as close to plug-and-play as possible. If it’s too hard to implement on DIY units, it will not work.
uRADMonitorWe’ll need to open the units and do the update manually 🙁
Wish there was a way to implement OTA updates, but that’s simply not possible with the current firmware.
To update, a programmer is needed. I personally use the USPAsp. Any of these two variants will work:
http://www.ebay.com/itm/351223992863
http://www.ebay.com/itm/351223992863
Though I prefer the one with longer cable. Also it’s important they are set to 3.3V using the jumper. Using it set at 5V is dangerous for the Ethernet module in the uRADMonitor unit.
