https://espressif-docs.readthedocs-hosted.com/projects/espressif-esp-iot-solution/en/latest/hw-reference/ESP-Prog_guide.html

Installing

COM port driver

You’ll need to install the FTDI FT2232HL driver.
(Download the Windows driver package under VCP drivers, unzip and point Update Driver to it in Windows device manager).

OpenOCD Driver

Download and install the Zadig tool (Zadig_X.X.exe) from https://zadig.akeo.ie

Menu > Options > List All Devices
The list of devices that should contain two specific USB entries:
“Dual RS232-HS (Interface 0)” <This is the JTAG port
“Dual RS232-HS (Interface 1)” <This is the UART port
The driver name will be “FTDIBUS (vxxxx)” and USB ID: 0403 6010.

We need to change the driver for the JTAG port

Select “Dual RS232-HS (Interface 0)”

The current driver will be “FTDIBUS (vxxxx)”. It needs to be replaced with “WinUSB (v6xxxxx)”
Press Replace Driver

Ports

The ESP-Prog appears as two COM ports.
Lower port number: JTAG interface (disappears once the WinUSB OpenOCD driver has been selected).
Higher port number: Program interface

USEFUL?
We benefit hugely from resources on the web so we decided we should try and give back some of our knowledge and resources to the community by opening up many of our company’s internal notes and libraries through mini sites like this. We hope you find the site helpful.
Please feel free to comment if you can add help to this page or point out issues and solutions you have found, but please note that we do not provide support on this site. If you need help with a problem please use one of the many online forums.

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