Not sure if I sent reply. But I have Decawave's DWM1000 connected via HSPI. I use 500mA vreg. I also plan to attach Adafuits LSM9DS1 board to this same board.

Yes, I have a DWM1000 UWB module. I have read many comments and I have noticed that ESP32 is quite picky on the power supply. I have a 500mA v-reg.

I also have similar problem. I try to download a program to ESP-WROOM-32. The module is on a board. I use Arduino IDE to download. Everything seems to go well but after I remove power from board and remove ground jumper from IO0 and power the board there is nothing in Serial monitor. After resetting...