KakuteH7v2 ESP32-C3 reflash

I’m try to reflash ES32-C3 on KakuteH7v2 for compatible with ArduPilot GCS (default FW compatible with SpeedyBee only and have not serial port in bluetooth) but unable to find suitable pads for this task. What do you think these pads are needed:

I think RX, TX and M (?) connected to U0RXD, U0TXD, GPIO9.

Is it enough for flashing?

After power up with grounded M pin i get:

ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x1 (POWERON),boot:0x0 (USB_BOOT)
wait usb download

on RX/TX pad in 115200 8N1 but unable to flash. Any ideas?

Are you trying this procedure?
https://ardupilot.org/copter/docs/common-holybro-kakuteh7-v2.html#loading-firmware

But he wants to flash the ESP32 …

Oh yeah - sorry, ignore me

Did you make any progress? Maybe need a 10-100k resistor in series to ground to correctly pull down to download mode during boot up.

Just stumbled upon your post as I was thinking about doing the same to an older kakute v1 that’s sitting in my drawer.

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@ph70 @Elliot Hi did u manage to solve this? I have the exact same issue as you
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