IWR6843: What does Init Calibration Status = 0x1ffe mean? CLI.c hardcoded does not produce any plot

Hello everyone.

I tried to hard code cli.c just like in https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/1023/hard_5F00_coded_5F00_sensor_5F00_config_5F00_14xx_5F00_sdk12.zip from my original cli.c, and compile (using gmake) cli and the demo, and everything seems fine. But when i run the mmWave_Demo_Visualizer, although I got no error message, and when it hit "sensorStart",it emits 

mmwDemo:/>Command

Debug: Init Calibration Status = 0x1ffe

Done

and produce no plot. It definitely send something through uart, which I can saw on Tera Term. My question are:

1. What does Init Calibration Status = 0x1ffe mean? 

2. Why it doesn't plot? It was plot nicely if i send the cfg through the demo visualizer, but it is not what i want when i hardcoded the cli. 

Thank you very much.