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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.

bthoven
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  • why are you looking for the firmware source? – jsotola Mar 09 '21 at 05:38
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    Have you tried finding the firmware in binary? That would be enough. Mostly firmware isn't opensource, but can be downloaded as hex file. – chrisl Mar 09 '21 at 06:12
  • It could be either binary or source. I can't find both. Can I extract its binary from one of my DT-06? – bthoven Mar 10 '21 at 07:45
  • Did you copy from one DT-06 to another DT-06 with the above program? I would also like you to show me the connections. Thanks. – ferbela Feb 18 '22 at 13:23
  • Just save the stock firmware from one DT-06 on your pc/laptop and flash the saved firmware to another DT-06 which stock firmware was replaced earlier See my commands in my answer below. – bthoven Feb 19 '22 at 07:43

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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
bthoven
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  • I also have some DT-06 modules that did not come with the original firmware. I appreciate your knowledge. I'm just getting started with the arduino. It would be good for many if you could make the original firmware of the DT-06 Wifi module with the .ino extension as an arduino program. , or you could send it. thank you: ferbela@freemail.hu – ferbela Feb 20 '22 at 07:34
  • You may download its stock firmware (as a .bin file) from my google drive here: https://drive.google.com/file/d/1oJyDso02NVfE8YmhDvKFJmyJGmnOsdw2/view?usp=sharing or as a zip file here: https://drive.google.com/file/d/1Z19SgD2dpa5PM9bHKWDcOLvxZjFnL2d3/view?usp=sharing I did not use Arduino software to extract its stock firmware. I use python commands as posted here. Sorry I'm not sure how to make it as xxx.ino as you suggested. – bthoven Feb 20 '22 at 09:18