please try it ONLY with devices which ARE ALREADY bricked and show the 
devicenull error ...


- prepare a definitely working micro SD card ...
- copy the file "LegacyFix.tft" on the empty card (attached) ...
- insert the card into your bricked display ...

THE TFT WILL WORK FOR ANY T OR K NEXTION DISPLAY SIZE TYPE

- restart your Nextion with inserted SD card ...
- the recovery process starts hidden in the background ...

THE DISPLAY STAYS WHITE, YOU WON'T SEE ANY SCREEN MESSAGE DURING THIS 
RECOVERY, NO MESSAGE, NO PROGRESS

- just wait around 1 minute ...
- remove the SD card ...
- restart the Nextion ...

THE DISPLAY NOW SHOULD SHOW A DATA ERROR MESSAGE

- now, just continue as normal and upload your own TFT ...
- the first own TFT  should be just with one touch_j in preload action ...

BECAUSE OF RECOVERY, YOU NEED TO RECALIBRATE THE TOUCHSENSOR ONCE WITH 
touch_j

just issue the touch_j via TFT or serial via terminal

after this all, we expect that your display will work again as normal ...

please follow all the steps as exact as possible ...
