ESP8266 Community Forum

- Thu Jan 25, 2018 9:03 am #73480 I have purchased a wifi touch light switch and it has a esp8266mod chip on it. I want to reprogram this with new firmware. .. I have connected as per the many instructions with its own power supply and can put it in normal or boot mode etc. It works at 74880 baud and i can see either a boot message or normal startup sequence with i reset the chip. I cant get the chip to accept any AT commands or any connection with esptool or the nodemcu flasher tool. I can see the transmit light sending the commands but no response. Can the manufacturers lock these down and if so how.. I guess as a minimum they could remove the AT functions, but what about stopping the esptool, nodemcu flasher etc. Is this likely to be my inexperience trying to do this or how do i circumvent Are there any other tools I could try to erase the existing firmware. thanks ste (not after boot i have tried changing to 115200 with no luck) and i have left the pins in the same state as at startup.. eg gpi02 is still low etc

- Mon Jan 29, 2018 5:10 pm #73567 Managed to make progress after reading a few more posts..to help other newbies.. i put a little reset switch in with capacitor. Used a few differnet tools to flash. Come to conclusion AT command set simply not on the existing firmware or some of the others i have tried for that matter.
Best results with the newer nodemcu-pyflasher-2.2 . Put a basic image on and getting a response.. remember if you get unintelligble characters when trying a basic serial terminal connection to try different baud rates. I have had most success with 74880 and 115200.. now to try and flash it with a sonoff-tasmota image to make integration with smartthings easier..