I found and fixed the problem, which I think was caused by my IDE incorrectly installing the drivers. After I get the serial port working(with JTAG not working), there are 2 devices in the device manager, "USB JTAG/serial debug unit," and "USB Serial Device." But for some reason in the JTAG/Serial d...

I just populated a custom PCB and have successfully flashed and debugged a test program using JTAG, but I cannot get the serial port working at the same time as JTAG. To get the serial port to show up in my COM ports after flashing/debugging with JTAG, I have to uninstall the driver in Device Manage...

I know this is an old thread, but for anyone googling in 2023+
https://github.com/espressif/esp-serial-flasher

Edit: Tried programming it with an example project using VisualGDB instead of VisualMicro/Arduino and it was able to program via JTAG. So looks like it is a software related problem. Oh I forgot to mention if I press boot button it does go into UART boot mode. I've tried programming with JTAG and it...

I'm having almost exact same issue, down to the old prototype working and the new one not. Not sure if the OP was able to program it, but I'm unable to program via UART or JTAG. I believe the problem has something to do with the flash, when trying to upload it can't detect flash size and defaults to...

Well that sucks, they seem to be the most popular for sale. Wonder why they decided to do that.

Yes, I was working on a project/job, uploaded the program and it was working. Changed one line, and all of a sudden it kept restarting from an exception. I removed the changes, tried again and it still wasn't working. I tried to start debugging with JTAG, and noticed during upload it wasn't able to ...

Try soldering a 10uf cap from EN to ground.

I just had a module with bad flash, had to take the shield off and replace the chip. Works now.

If you have an EEPROM programmer, try reading the chip and see if it fully erases.

In the datasheet the Wrover-IE says 7 or so pins are not connected. Are they actually connected to flash, like the non e/ie version? I got a TFT screen working on the flash pins on the 8266, and I'd like to do the same with the wrover. I would test the wrover, but I do not have any development board...