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By atexit8
#74001 I have three 3 ESP-01 modules.

I have used Espressif's ESPFlashDownTool to update the firmware to SDK 2.0.0, AT version 1.3.0.0

I know it is not the latest version.
But I wanted to see if I can use AT+CIUPDATE to update the firmware to SDK 2.2.0 which is the newest according to their website.

But it doesn't work.
Am I suppose to do something after I send that command?
Am I not understanding what the command does?

https://imgur.com/tnNRN0B

Image

Fortunately, the module is not bricked, but the firmware does not change.

.