We tried the USB option too. That did not work either.
We would like to do the firmware update via UART. The flash loader documentation does mention it supported both USB and UART. Did we miss something?
from the app team:
RT1020 has different downloading and jumping addresses for ivt_flashloader.bin, they are 0x20208000 and 0x20208400.
For the AN12238, it just gives the descriptions of the general Flashloader information, includes the common knowledge, steps and commands, and selects the RT1050 platform as the example.
Retrieving data ...