How To Flash Firmware In Macos And Linux Systems; Does Esp32 Support Programming Using Jtag Pins Directly; Does Esp_Flash_Downloader_Tool Support Customized Programming Control; Can I Enable The Security Boot Function For Esp32 Via Ota - Espressif Systems ESP Faq

Chapter 2. Development environment

2.4.3 How to flash firmware in macOS and Linux systems?

• For Apple system (macOS), you can use
• For Linux system (e.g., ubuntu), you can use

2.4.4 Does ESP32 support programming using JTAG pins directly?

Yes, ESP32 supports using
2.4.5 Does ESP_Flash_Downloader_Tool support customized programming control？
• The GUI tool is not open-sourced and does not support embedded executive script.
• The low-level component
encryption. It is recommended to conduct secondary development based on this component.

2.4.6 Can I enable the Security Boot function for ESP32 via OTA?

• It is not recommended to enable Security Boot function through OTA, as it poses operational risks and requires
multiple OTA firmware updates.
• Since the Security Boot function is in Bootloader, please update Bootloader first to enable this function.
1. First, check the partition table of your current device to see if it can store the Bootloader with Security
Boot enabled.
2. Then, update an intermediate firmware which can be written in Bootloader partition. By default, the
Bootloader partition cannot be erased or written, you need to enable them via make menuconfig.
3. Sign the intermediate firmware and upgrade it to the target device through OTA. Then upgrade the Boot-
loader of this firmware and the signed new firmware through OTA.
4. If there are situations as powered-down or network break-down and restart during the Bootloader OTA
process, the device would not be started and needs to be re-flashed.
2.4.7 How to resolve the following error occured when flashing firmware to ESP32-S2
based on ESP-IDF v4.1?
esptool.py v2.9-dev
Serial port /dev/ttyUSB0
Connecting....
Chip is ESP32S2 Beta
Features: Engineering Sample
Crystal is 40MHz
MAC: 7c:df:a1:01:b7:64
Uploading stub...
Running stub...
A fatal error occurred: Invalid head of packet
esptool.py failed with
Solution
If you are using ESP32-S2 instead of ESP32-S2 Beta, please update ESP-IDF to v4.2 or later versions.
Notes:
Espressif Systems
esptool downloaded via brew or git to flash firmware.
esptool
JTAG Pins to flash directly. Please refer to
esptool is open-sourced and can be used to perform all functions such as flashing and
exit code 2
18
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downloaded via apt-get or git to flash firmware.
Upload application for
(0x50)
debugging.
Release master