Failed Mass Upgrade

[Tim Dowker]

Failed mass upgrade

Hello, I'm hoping someone smarter than me can give me some help with this one.

Tried to mass upgrade devices on my network using the following command. I know, I know, very stupid thing to do. This has worked fine in the past but for some reason this time it really messed some devices up.

"for ((i=10;i<=254;i++)); do echo $i; curl -m 3 "http://192.168.1.$i/cm?cmnd=Upgrade%201"\; done"

After running this command some upgraded fine, others didn't work at all and just stayed on their existing firmware but a lot are now hung in some kind of strange AP mode I haven't seen before (see screenshot). The ones that are hung have an SSID of "esp-****" where the **** is what I believe to be some kind of MAC address or something.

I can connect to the "esp-****" AP from my phone or laptop and I do get an IP address of 192.168.4.2 but when I try to open a browser to 192.168.4.1, nothing loads. I can ping 192.168.4.1. I've tried to browse to 192.168.4.1 on multiple browsers and also tried running an NMAP of the 192.168.4.1 IP address and nothing gets returned. (see screenshot)

Some devices are easy enough to reset using the power cycle method, like smart plugs, however others would be a huge pain, like wall switches.

Any help would be greatly appreciated.

[Philip Knowles]

You could try a long power off (10 minutes or so) which sometimes helps you could also try backlogging your wifi details to 192.168.4.1 followed by restart 1

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From: sonof...@googlegroups.com <sonof...@googlegroups.com> on behalf of Tim Dowker <timd...@gmail.com>
Sent: 17 July 2025 14:05
To: TasmotaUsers <sonof...@googlegroups.com>
Subject: Failed Mass Upgrade

 

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[Tim Dowker]

Hello, thank you for the suggestions.  I have tried powering off for an extended period - actually had one smart plug unplugged for 72 hours or so and still had the same issue.

I'm unfamiliar with "backlogging" - could you please elaborate?

Thank you

[Philip Knowles]

https://tasmota.github.io/docs/Commands/#the-power-of-backlog

Commands - Tasmota Documentation (Wiki) for Tasmota tasmota.github.io

So send a http request containing the WiFi details to 192.168.4.1

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From: sonof...@googlegroups.com <sonof...@googlegroups.com> on behalf of Tim Dowker <timd...@gmail.com>

Sent: 18 July 2025 00:19
To: TasmotaUsers <sonof...@googlegroups.com>
Subject: Re: Failed Mass Upgrade

 

To view this discussion, visit https://groups.google.com/d/msgid/sonoffusers/3ec0ff13-c11d-40a0-a10b-1e267226cd0en%40googlegroups.com.