okay sir thank you for the clear information. As you said before, i have changed the hardware connections as CH_EN PIN is pulled low to high after power up with 10micro farad capacitor. but still i m getting the same error. i have attached the screenshot of the error. i dont know from where i have t...

is there any way to burn a bootloader for esp32 using arduino uno ? (arduino uno as ISP programmer) ...

Thanks for the explanation. But how to fix this error (not entering download mode) in my new ic. Should I burn a bootloader again ? Please suggest me a way to fix this.
Thank you.

Yes. Now I have replaced the working Ic on the same board. But now it is working fine. From this I can able to understand there is a problem in the bootloader ( not entering into bootloader). Is my understanding correct ?

No I didn't get any response from the esp32 on the terminal. Instead I m getting error.
Error : "A fatal error occurred : Failed to connect esp32: Timeout waiting for the packet"

thank you for the reply.. i will try your suggesstion. but gave the same connections as mentioned above to the esp32 module (please refer the attachment) . it works very well.
i do not understand this. please explain me.

Hello everyone, I m doing an iot product in which i m using esp32d0wdq6 controller. i have designed my own board and soldered an new bare ic, spi flash ic (W25Q40CLSNIG-Winbond), etc... Since this is bare ic, i dont know whether boot loader is present already or not, so i tried to burn bootloader wi...

Hello everyone, i m doing an iot project in which i m using esp32d0wdq6 controller. i have designed my own board and soldered an new bare ic, spi flash ic, etc... i m getting an error while buruning a boot loader. please suggest me the right way to buring a bootloader. my connections are as follows ...