I finally figured it out! Even though it does not make sense to me at all.
If I use a CP2104 as USB <-> UART instead of the FTDIs, it works fine.

I do not really understand why, because both operrate at 3.3V. Since I could use the FTDIs for monitoring and to flash other devices, the driver is fine ...

Yes, it's always at the end (after 100%). Although I think it is the next step which fails.
The module itself shouldn't be the problem, since I tried it with two "different" and got the same result.

http://www2.pic-upload.de/thumb/32492084/IMAG0714.jpg

There must be something wrong with my ...

It fails always at the end after 100% like in the video (guess during the checksum test).
Unfortunately the power supply is fine, that would be easy to solve.
But I had that idea as well and monitored the voltage while flashing. It remains between 3.29V and 3.31V.

I also pluged in the FTDI into the ...

Hi there,

I am trying for a few days to flash my ESP-WROOM-32 via FTDI and I do not know what I am doing wrong.
Please have a look at my "setup". I am grateful for any advice.

If I try to flash the DevKit-Board (on COM6) it works just fine. So the esp-idf shouldn't be the problem.

http://www2 ...