How to backdate to older firmware


I noticed a problem with my Photos when they updated to 0.5.3. I’d like to back one of my devices to 0.4.9 just to verify that the problem is not somehow in my code.

Can I flash 0.4.9 to my device via the cloud?


You can download all the system binaries from here

To downgrade, just flash them part2 before part1.

More elaborate instructions can be found here
Particle Firmware Updates Thread