user73029: I have two DT-06 boards DT06 datasheet.

The board stock firmware provides Web UI for wifi/network/serial setup. I've replaced the firmware on one board with other sketch; but now I want to revert it to the stock firmware. I cannot find the stock firmware source code anywhere. The DT-06 manufacturer also won't give it out.
Is it possible to extract the stock firmware from another DT-06 board and put it back into the other DT-06 board?
Thank you.

user73029: Okay. I found a way to extract the binary file (stock firmware) from one DT-06 and flash it to another modified DT-06, by using esptool command
/*To extract firmware */:
esptool.py -p COM4 -b 460800 read_flash 0 0x400000 dt06_backup.bin
/*To flash the backup binary file to another DT-06 */
esptool.py -p com4 write_flash -fm dout 0x00000 dt06_backup.bin


73029: <p>I have two DT-06 boards <a href="https://www.mikrocontroller.net/attachment/349564/UserManualForTTL-WiFi.pdf" rel="nofollow noreferrer">DT06 datasheet</a>.</p>
<hr />
<p>The board stock firmware provides Web UI for wifi/network/serial setup. I've replaced the firmware on one board with other sketch; but now I want to revert it to the stock firmware. I cannot find the stock firmware source code anywhere. The DT-06 manufacturer also won't give it out.</p>
<p>Is it possible to extract the stock firmware from another DT-06 board and put it back into the other DT-06 board?</p>
<p>Thank you.</p>
 73029: <p>Okay. I found a way to extract the binary file (stock firmware) from one DT-06 and flash it to another modified DT-06, by using esptool command</p>
<pre><code>/*To extract firmware */:
esptool.py -p COM4 -b 460800 read_flash 0 0x400000 dt06_backup.bin
/*To flash the backup binary file to another DT-06 */
esptool.py -p com4 write_flash -fm dout 0x00000 dt06_backup.bin
</code></pre>
