I have 11x S20 sonoff sockets. 8 of them I have upgraded to firmware 1.6.0 from the ewelink software without a problem.
I have 3 devices that will not upgrade
1x S20 with 1.5.2 firmware
2x S20 with 1.5.5 firmware
I've tried power cycling them, restarting the app, restarting the phone etc several times. They have failed to upgrade several times.
It's wierd that 8 devices upgrade fine, but 3 don't so something must be different.
How do I debug this?
I am facing this issue.. Ive tried with Wifi , ive tried device on wifi and phone on 4G. Ive tried device on hotspot and phone on same hotspot. and ive tried Device on hotspot and phone on 4g.
It always fails at 90%
This definitely needs to be addressed. If there needs to be incremental updates, so be it. But it should be addressed