@jimit 在 Display with wrong color and contrast after SD writing 中说：
ESPFlashDownload
I have just tried; I am able to erase the flash with ESPDownloadTool, both in SPI and HSPI, but if I upload the firmware via Arduino, the display has always the same problem.
I don't know I it works but, is it possible to reflash the bootloader?
Thanks,
Paolo