IWRL6432BOOST: SBL in SDK 5.3.0.2 does not work

Part Number: IWRL6432BOOST
Other Parts Discussed in Thread: UNIFLASH, MMWAVE-L-SDK

Tool/software:

Hi expert, 

I am experiencing issues with the SBL (System Boot Loader) functionality on my IWRL6432BOOST evaluation board. After successfully downloading both the SBL image and application binary (appimage) using the Uniflash tool, the board enters Function Mode as expected. However, when attempting to establish a serial connection via Tera Term, the terminal window remains blank with no output, suggesting the SBL/AppImage may not be initializing properly or communicating with the host. Could you assist me in identifying the root cause?

1. reference steps: xWRL6432 MMWAVE-L-SDK: Secondary Boot Loader

2. sbl.release.appimage or sbl.debug.appimage  path :C:\ti\MMWAVE_L_SDK_05_03_00_02\examples\drivers\boot\sbl\xwrL64xx-evm\m4fss0-0_nortos\ti-arm-clang

Thanks!

Shelby