thelastoutpostworkshop has released a new browser-based tool called ESPConnect that allows you to flash firmware to an ESP32 microcontroller without the need to download and install the EspressIF Flash Download tool.
This tool is supported in Chrome, Edge, and Opera browsers on both Windows and Mac. As of the date of this revision, this tool is not supported in Linux.
ESPConnect works much better than EspressIF’s own browser-based too, EspLaunchPad, described in an earlier post. ESPConnect is much easier to use, in addition, it has the ability to switch the ESP32 from the default TinyUSB serial port to the USB JTAG programming port without the need of pressing the hardware Programming button on the processor.
The white-paper below has detailed instructions for using ESPConnect to flash an updated firmware .BIN file to your CTR2 unit.