SD card unreadable, how to recover system?

Stopped communicating. RED-RED-GREEN LED
Started broadcasting “ESP-F344B2” instead of iotawatt.
After reading some posts here, I replaced the Micro-SD card.
Started broadcasting “iotawatt”.

Is getting a DHCP address OK, but when I browse the IP, returns:
Not found: GET, URI: /

The original SD card can’t be read by any systems I tried (MacOS, Debian, Win-10)
New SD card works, here is what was written to it:
** Restart **

SD initialized.
6/05/24 13:10:47z Real Time Clock is running. Unix time 1717593047
6/05/24 13:10:47z Reset Reason: Power-fail restart.
6/05/24 13:10:47z ESP8266 ID: 15942834, RTC PCF8523 (68)
6/05/24 13:10:47z IoTaWatt 5.0, Firmware version 02_08_03
6/05/24 13:10:47z SPIFFS mounted.
6/05/24 13:10:47z setConfig: config.txt open failed.
6/05/24 13:10:47z config file invalid, attempting recovery.
6/05/24 13:10:47z configuration recovery unsuccessful.
6/05/24 13:10:47z Local time zone: +0:00
6/05/24 13:10:47z device name: IotaWatt
6/05/24 13:10:50z Connecting with WiFiManager.
6/05/24 13:10:53z HTTP server started

LED is RED-RED-GREEN-GREEN, so what do I replace the missing/corrupt config.txt file with?

It is not entering AP (Access Point) mode.
How can I access the iotawatt to configure it?

Hi,

Didi you get this working, I have the same problem.

The MicroSD was not readable, and could not be mounted by anything I have.
I have two IoTaWatt devices.
They are not identical (different CT’s)
Took the MicroSD out of the working unit, copied the contents to a directory on my PC.
Copied the files from the PC to a new MicroSD card, put that in the dead IoTaWatt device.
It came back up and worked fine, after I edited the configuration to use the type of CT’s on that device.
It might be possible to get the same files here:

(I did not try it, as I had a duplicate system to copy from)

Note that there is a copy of your last good config file in the ESP8266 SPIFFS file system. This post explains how to build a new SDcard and how to access that SPIFFS copy of your config.