Thanks a lot guys for such quick response . Its a relief that I can update through OTA. I should learn more about partition tables etc.

Hi I am using esp32doit-devkit-v1. When I build the sketch, I get following lines at the end: DATA: [= ] 12.9% (used 42424 bytes from 327680 bytes) PROGRAM: [====== ] 62.5% (used 819078 bytes from 1310720 bytes) I am of the impression that this board has 4MB flash memory. But these line indicating t...

Thanks chegewara, this seems to be a good link, reasonable prices and lot of verity also.
I am coming to conclusion that to buy Espressif products, there is no single official site. One has to search and compare many places online before order, in bulk or only a few.

You are right ESP-Yuhao, when I click "Espressif official sample provider ›" on page https://www.espressif.com/en/company/contact/buy-a-sample , it takes me to mouser page https://www2.mouser.com/espressif/ . But it seems to be expensive as compared to aliexpress and others. Also there is no cheap s...

Thanks. I want to know which is Espressif official or recommended online sale point, if any.

I recently bought ESP32 DEVKIT V1, but when I saw the documentation ( https://docs.espressif.com/projects/esp-idf/en/latest/get-started/get-started-devkitc.html ), they were talking about V4 (ESP32-DevKitC V4). I would like to know which is the best online shop to buy latest ESPRESSIF products, in b...