Wi-Fi Connection Issues on ESP32-WROOM-32D: "Incorrect Password"

[pcdevs]

Hello everybody!

I am facing an issue with ESP32-WROOM-32D modules related to Wi-Fi connection. On some modules (not all), I receive the error "Incorrect password" when trying to connect Android devices to the network generated by the ESP32. The issue is intermittent and seems to be related to the firmware or memory.

Interestingly, after several attempts to reflash the ESP32, the password starts working normally again. This leads me to believe the problem might be related to the module's memory, although I always erase it before flashing new firmware.

Commands Used for Flashing:
I am using esptool.py for flashing, and the commands are as follows:

Memory Erase:

Code: Select all

esptool.py erase_flash

Firmware Flashing:

Code: Select all

esptool.py --chip esp32 --port "COM3" --baud 460800 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size 4MB 0x1000 bootloader.bin 0x8000 partitions.bin 0xe000 boot_app0.bin 0x10000 firmware.bin

ESP32-WROOM-32D Module Specifications:

IDF Version: v4.0.1
AT Version: 2.1.0.0
Firmware P/N: ESP32U012

esp32reellabel.png (291.32 KiB) Viewed 1013 times

Has anyone faced a similar issue with the ESP32?
Is there any additional step I should consider during the flashing or configuration of the module?
Could this be a specific issue with the firmware version or AT commands?

Thank you in advance for any guidance or tips to help resolve this issue!