Just a quick update. My OpenSprinkler stopped responding again this morning even after the Jul 18th w5500 firmware.
Looking back, I don’t think my symptoms are similar to John K as I don’t get a password prompt or any response when accessing it through a browser. Instead, it just times out. No errors other than the time out show up in the browser developer console.
My symptoms seem to be closer to the original issue where the ENC28J60 module is impacted by some other device on my network.
Again, if there is an easy way to check the network register values (ESTAT.BUFFER and EIR.RXERIF), I’d be happy to try to pinpoint what device on my network is interfering.