To program TQ2440, we connect the debug serial port to PC, and use a serial terminal program called SecureCRT.
Turn on TQ2440, and observe the serial port output:
NOR boot mode
Mine is 7”, and you use 3” if you have a 3″ screen:
Uboot programmed to NAND:
Now done, press r to reboot, leave boot jumper in “boot from NAND” position: