I use upload protocol v1.1
Nextion accepts a tft file in chunks of 4 kilobytes. When finished, it checks the whole file and gives you a verdict. The update is successful or not.
My device runs in an electrical interference environment and sometimes at the end of the update I get an error message and the nextion hangs. In this case the Nextion does not respond to commands in uart, a power reset is required.
Is there a way to check every 4 kilobytes for a checksum? Is there a way to display the screen without a power reset?