You can download all the system binaries from here
https://github.com/spark/firmware/tags
To downgrade, just flash them part2 before part1.
More elaborate instructions can be found here
Particle Firmware Updates Thread
You can download all the system binaries from here
https://github.com/spark/firmware/tags
To downgrade, just flash them part2 before part1.
More elaborate instructions can be found here
Particle Firmware Updates Thread