Help to find instructions set for TJC3224T132 LCD(Ender 3 V3 SE)

[navaismo]

Hello,
I found this really cool project that can handle several kinds of LCD for 3D printers with Marlin, I'm becoming crazy trying to find the low level instruction set for the LCD TJC3224T132 that Creality uses in the Ender 3 V3 SE printer.

I've modified the firmware of this printer to show details when a print job starts from octoprint Server. Now I want to see the Thumbnail of the GCODE Preview in the LCD, according the code it should be possible to write to the SRAM and render from it the Image. But so far my LCD is not responding to the instructions.

I've dug deep in the web to find info related to the LCD(with not much luck) based on the code and found this DWIN datasheet that has almost the same intructions set as in the Ender's code but nor the SRAM writing or the QR instructions are working for my LCD model.

If any of you have any info related or can point me into the right direction would be great and much appreciated even if its not for free, I'm really now obsessed with this chinese LCD to let me write my own images into it.

Image of the LCD: