ESP8266 Community Forum

- Sat Mar 28, 2015 11:09 pm #12892 I have three ESP-01 modules.

If I flash any of the new firmwares (using the multiple bin files), the ESP does not do anything - it will print "ready" after a reset and echo whatever I type (as I am typing it) but that's it. I've even tried the old v0.9.2.2 AT Firmware.bin and that has the same problem. But if I flash ESP_8266_BIN0.92.bin or AI-v0.9.5.0 AT Firmware.bin, it works. What am I doing wrong?

- Sun Mar 29, 2015 7:04 am #12918 Other people have reported similar problems: http://www.esp8266.com/viewtopic.php?f=6&t=1263&start=20. Is it possible that not all ESP-01 modules are the same? I am guessing the difference will be in the ROM bootloader?

- Sun Mar 29, 2015 7:29 am #12920 OK, I've worked it out. Incredibly, some firmwares work with CR ending only while some firmwares need CR+LF! I thought PUTTY sends CR+LF by enabling "Implicit LF in every CR" but it doesn't!