ESP32 unexpected error when flashing the 'factory' firmware

[OGlushonkov]

Hi,

I am having troubles to flash the "factory" firmware on my ESP32-WROOM-32D board. It seems that the "base" one was installed correctly.. After installation I was getting these two lines repeating continuously in the log window:
[17:20:54]HyperHDR frames: 0 (FPS), receiv.: 0, good: 0, incompl.: 0, mem1: 0, mem2: 0, heap: 315444
[17:20:54]RGBW => Gain: 255/255, red: 176, green: 176, blue: 112

I unplugged and then connected back the ESP board, then tried to flash the second firmware but got the following error:
Unexpected error: The firmware binary is invalid (magic byte=FF, should be E9)

I tried to install it several time, first by following the Wiki guide to compile the project and create a "custom firmware" (without changing the code), then with the files from the Release page v9 (hyperspi_esp32_SK6812_RGBW_NEUTRAL.factory.bin)... with no success so far. I looked for similar cases online but didn't find any helpful information. What am I doing wrong? Could you please help me with this issue?

Thank you for your answers.

[awawa-dev]

Hi
One question I must ask: did you extract the firmware from ZIP before flashing?

[OGlushonkov]

Yes

[awawa-dev]

Recovery firmwares were tested only with esptool.py not sure if esp home flasher can flash it correctly (the destination address is also different than standard non-factory firmware)

[OGlushonkov]

OK, I haven't try this yet. I used ESPHome-Flasher as you mention. Thank you for your suggestion!