Thanks Sprite.
I have removed a flash chip from an ESP12F module and connected to ESP32S3
2025-07-08_13-47.png
I followed the design guide for connecting it. I know there is lack of decoupling and stuff which will be fixed after testing.
later i have changed USB mode to Hardware CDC and was able ...

Hi,
thanks for the reply.
i am also not sure that it is an original ESP32-S3FN8 or not. I bought the chip from aliexpress and the seller mentioned it is legit, but i dont trust that. Later i connected an 4MB flash and i was able to upload the firmware with a serial print, just a simple serial print ...

Hi everyone,
I need some technical support/help regarding the this issue. I have designed a custom PCB using ESP32-S3FN8 chip i am not able to upload any firmware to it neither able to get chip info using esptool. please refer to schematics below.
2025-07-05_23-34.png

photo_2025-07-05_23-28-24 ...