ESP32 Reboot Loop - invalid header After Flashing (Flash Encryption Enabled)

[Vaibhav02]

Hi everyone,

I'm facing an issue with my ESP32 where it keeps rebooting with the following log on serial monitor:

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ets Jul 29 2019 12:21:46
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
invalid header: 0xf82bbea3
invalid header: 0xf82bbea3
...
rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
invalid header: 0xf82bbea3
...

Context:
ESP32 Chip: ESP32-D0WD-V3 (rev 3.1)

ESP-IDF Version: v5.3

Baud rate: 115200

Flash encryption: Enabled (FLASH_CRYPT_CNT = 1)

DISABLE_DL_DECRYPT = True (seen in espefuse.py summary)

[ahsrabrifat]

If you're using ESP-IDF:

Run the build and flash like this:

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idf.py build
idf.py encrypted-flash

If you flash with esptool.py directly, use:

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esptool.py --chip esp32 encrypt_flash \
  --keyfile encryption_key.bin \
  --addr 0x10000 firmware.bin

Make sure the bootloader and partition table are also encrypted if needed.

[Vaibhav02]

Hi @ahsrabrifat,
Thank you for your response. I am using ESP-IDF and have already tried this using the monitor, but the same error occurs.