To use Espressif’s download server, set the environment variable IDFGITHUBASSETS to dl.espressif.com/githubassets. When the install process is downloading a tool from github.com, the URL will be rewritten to use this server instead. Flashing & Upgrade EPS8266 v1 with ESPRESSIF flash tool In this illustration we will going to flash the ESP8266 version 1 same or the NodeMCU or ESP8266 12, and 13, most ESP8266 board will do support on this tool just kindly follow the address bellow. Aug 15, 2018 This blog explains how the download tool does with the secure boot and flash encryption. But I still got confused. Cause generating and burning key with download tool is very different from the IDF instructions More instructions or examples of using secure boot & flash encryption with the download tool are very welcomed.

Which goes where – when using a bootloader for FOTA.

The files:

master_device_key.bin – Obtained from Espressif Cloud
esp_init_data_default.bin – Stores default RF parameter values
boot.bin – bootloader
user1.bin and user2.bin – user firmware
blank.bin – blank settings , flash to get default parameters

512KB

master_device_key.bin 0x3E000
esp_init_data_default.bin 0x7C000
blank.bin 0x7E000
boot.bin 0x00000
user1.bin 0x01000
user2.bin 0x41000

1024KB Flash

master_device_key.bin 0x3E000
esp_init_data_default.bin 0xFC000
blank.bin 0xFE000
boot.bin 0x00000
user1.bin 0x01000
user2.bin 0x81000

2048KB Flash

master_device_key.bin 0x3E000
esp_init_data_default.bin 0x1FC000
blank.bin 0x1FE000
boot.bin 0x00000
user1.bin 0x01000
user2.bin 0x81000

Espressif Flash Download Tool Windows 10

4096KB Flash

master_device_key.bin 0x3E000
esp_init_data_default.bin 0x3FC000
blank.bin 0x3FE000
boot.bin 0x00000
user1.bin 0x01000
user2.bin 0x81000

How to use 1MB and above flash on espressif forum describes the use of download tool.

Here is what download tool does:

Options

Crystal Frequncy choices: 40Mhz, 26Mhz, 24Mhz – For a 40M crystal , the booting uart tx baud is 115200,(74880 for 26m accordinglyCrystal Freq will be set to the BYTE[48] of esp_init_data_default.bin
SPI Flash speed: 0 = 40MHz , 1 = 26.7MHz, 2 = 20MHz, f = 80MHz stored in BYTE[3]&0f of the images
SPI flash read mode: 0 = QIO, 1 = QOUT, 2=DIO, 3=DOUT set to the 3rd BYTE at flash address 0x0 so it is BYTE[2].
Flash size: Flash size is SET to the higher 4bit of 4TH BYTE at flash address 0x0 which is BYTE[3]»4)&0xf in the image:
0:512KB(256KB+256KB) – 4Mbit
1:256KB – 2Mbit
2:1MB(512KB+512KB) – 8Mbit
3:2MB(512KB+512KB) – 16Mbit
4:4MB(512KB+512KB) – 32Mbit
5:2MB-C1(1024KB+1024KB) – 16Mbit
6:4MB-C1(1024KB+1024KB) – 32Mbit

Stage plot pro serial number mac. tout as vdd33 – esp_init_data_default.bin BYTE[107] = 0xff

tout as adc – esp_init_data_default.bin BYTE[107] = VDD*10 /vdd > 1.8 and vdd < 3.6/

Low power options are left out for now.

To be continued …

Hello,
I am developing on ESP32 arduino framework and I would like to get the compiled firmware files so I can upload more units using ESP flash download tool.

I got the flash tool from here:
https://www.espressif.com/en/products/hardware/esp32/resources
Tools → Flash Download Tool

In project folder/.pio/build/platform/
I found these files

I read I need:

Espressif Flash Download Tool Linux

bootloader file
partition table file
firmware/app file.

Could anyone help me to locate these files compiled by platform io and help how to use them in ESP flash tool?

How To Use Esp32 Flash Download Tool

I appreciate any help, Thanks!