I've just built an RC2014 Classic II with an add-on ESP8266 module. It works fine,in almost all respects. If I disable the ESP8266 I can connect via USB/FTDI from a Linux box and everything in SCM works fine, including uploading Intel hex files.
However, if I remove the FTDI, re-enable the ESP8266 and connect with telnet, I cannot get SCM to accept Intel hex file uploads. I've tried:
1. Telnet from a terminal window in line mode
2. Telnet from a terminal window in character mode
3. Putty in telnet mode.
All of these give 'Bad command'
Any ideas, anyone? I'd rather not be tethered to it via USB
Thanks in advance for any help.