Ivan Grokhotkov

Investigated this a bit. Totally weird. The issue comes from the fact that the reply packet has incorrect size or checksum. I tried to print out each received byte: ```...

@stblassitude I've added a note to Arduino docs.

Hey, thanks, I'm aware of Cesanta's flasher. My plan regarding the stub was slightly different though. We have added compression to ESP32 bootloader protocol, based on initial work in feature/compression...

Running El Cap here, no issues. Which Serial adapter chip are you guys using? Also, which driver?

Good to know that CP2102 works fine for you (that's what I'm using myself with El Cap). I'm not familiar with Uno, which USB-serial chip does it use? I suppose...

@teomaragakis Removed all 3rd party kexts which were left over from my Yosemite installation, then installed Silabs VCP driver. Pretty much didn't do anything else. (I had to remove 3rd...

@boneskull are you using a PL2303 based adapter? These aren't currently supported by esptool-ck on OS X, please see https://github.com/igrr/esptool-ck/issues/9.

@boneskull ah, right. I have one CH340G device — NodeMCU 0.9. Just tried that on OS X 10.11.3 with the driver downloaded from http://blog.sengotta.net/signed-mac-os-driver-for-winchiphead-ch340-serial-bridge/. Didn't work initially, but then I...

After a few hours of flashing finally got this: ``` warning: espcomm_send_command: wrong direction/command: 0x01 0x07, expected 0x01 0x08 warning: espcomm_send_command: wrong direction/command: 0x01 0x07, expected 0x01 0x08 warning: espcomm_send_command:...

Well `serialport_set_dtr(0);` is not "set DTR line low", it's "deassert DTR line". Normal (non-asserted) state of DTR line is high. @luggi I'm not sure what we are doing differently, but...