My custom firmware is as following:
- stock ZNP-Pro-Secure-Standard 1.2.2a
- patch for source_routing coming from a post in the TI forum
- source_routing patches from z2m
- source_routing patches from Optimizing the cc2531 firmware for OpenHAB and the Zigbee binding
I’m adding devices to the network very slowly - 2/3 at a time and testing the network for ~1 week between changes. I’m currently at 22 devices.