AM6421: SPI boot mode fails with uniflash, but OSPI diagnostic is now working.

Part Number: AM6421
Other Parts Discussed in Thread: UNIFLASH

Hi !
The UART uniflash command flow is working now after removing the MMCSD/eMMC instance from example.syscfg.

However, when trying to connect using Uniflash GUI with XDS200 configured, we are getting the below error:

Run failed...
File Loader: Memory write failed: Timed out waiting for target to halt while executing am243x_alv_flasher.out

Also, when we connect to the UART terminal and press reset, we are continuously receiving "CCCC" instead of booting sbl_null.

Could you please suggest what could cause this issue in Uniflash GUI mode?