I had to reduce the image to a 256bit Indexed image!

Is there a hardware limitation for this i.e. is there a card size limit and a formatting requirement?
Is there a specific image limitation for the image?

I think there is no limitation on card size.
There might be a limitation on card read/write speed and that depend on the sdcard manufacturer and model.
As i know, the cards formatted as FAT32 are preffered.

@richard 在 drawJpgFile / drawBmpFile 中说：

i have just tested your programm and i still have the problem.
I think it's a hardware problem.
I'm waiting for another device
Thank you.

That problem can be caused by the ILI9341 controller from the TFT.
If that is the case, the only solution is a replacement.

@richard No. i didn't tested with arduino "ide". I uninstalled that from my PC because is mostly useless...

I use Visual Studio, Eclipse or PlatformIO.

I uploaded the PlatformIO project for your code to github: https://github.com/botofancalin/M5StackJpgtest
The M5Stack library is already installed local into project.
All you have to do is to download the repository and compile the code.

Maybe a stupid question (or two) but I'm going to ask anyway.
Is there a hardware limitation for this i.e. is there a card size limit and a formatting requirement?
Is there a specific image limitation for the image?

I use Visual Studio, Eclipse or PlatformIO.

I uploaded the PlatformIO project for your code to github: https://github.com/botofancalin/M5StackJpgtest
The M5Stack library is already installed local into project.
All you have to do is to download the repository and compile the code.

Leaving...
Hard resetting via RTS pin...
====================================================== [SUCCESS] Took 23.68 seconds =======================================
I still have the problem!
hardware problem?
I

And here is the result:

#include <M5Stack.h>

void setup(void) {

M5.begin();

M5.Lcd.setBrightness(200);
M5.Lcd.drawJpgFile(SD, "/corto.jpg"); // Load background from SD

//M5.Lcd.drawJpgFile(SD, "/corto_1.jpg", 0, 20, 300, 200);
// M5.Lcd.drawJpgFile(fs::FS &fs, const char *path, uint16_t x, uint16_t y, uint16_t maxWidth, uint16_t maxHeight, uint16_t offX, uint16_t offY, jpeg_div_t scale);
}

void loop() {

M5.update();
M5.Lcd.drawJpgFile(SD, "/corto.jpg");
delay(1000);
}
Thank you

The SD SPI freqency can be different than TFT SPI frequency, since SD is on a different SPI bus.