Remove the negative (-) terminal from your car battery for at least 30–60 minutes to completely drain the unit's residual power.
Source a clean, original version of the TNS510 firmware file. tns510 program cannot be read better
The TNS510 often communicates via SPI, I²C, or RS-485. A loose connector, incorrect termination resistor, or baud rate mismatch will cause partial reads. The system tries to “read better” by retrying, but eventually fails. Remove the negative (-) terminal from your car
“I left the car battery negative terminal off for one hour... then waited at least 15min for the screen to load before moving on.” Reddit · r/LexusIS · 1 year ago A loose connector, incorrect termination resistor, or baud
for (i=0; i<5; i++) data[i] = read_TNS510_block(address);
If you're looking for general information on how to approach improving the readability or functionality of a program like "tns510," here are some steps you might consider:
The error message "A program cannot be read. Please consult to a dealer" on a Toyota TNS510 head unit