Display with wrong color and contrast after SD writing
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 I was creating a cataloguer for IMU signal and when I was trying to save data on SDcard, immediately after file open, display started to show wrong color and contrast. I tried to erase flash, flash micro python, refresh arduino firmware for display testing, but nothing change. How can I solve this problem?  
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 @pperego Hi Pperego, Not sure I can help but...................... Did you try the the ESPFlashDownload tool to try to erase the flash ? Has worked for me. Did you have the com port selected on the tool ? If you did use that tool and it failed to erase the flash, did it give you an error message ? If I don't reply to your reply, it means I can't help and am leaving your response open for someone else to see. 
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 @jimit 在 Display with wrong color and contrast after SD writing ä¸è¯´ï¼š 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
