BQ41Z50EVM: BQ41Z50EVM .bqfs file programming issue

Part Number: BQ41Z50EVM
Other Parts Discussed in Thread: BQSTUDIO, BQ41Z50

Expert,

When using BQStudio+BQ41Z50EVM, we met below error when trying to programming .bqfs file.

Files: 

1. https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/bq41z50_5F00_latest_5F00_fw_5F00_1.bq.fs

2.https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/bq41z50_5F00_latest_5F00_FW_5F00_combined.bq.fs

3.https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/bq41z50_5F00_v0_5F00_01_5F00_build_5F00_21.sig.enc.bq.fs

What is the reason?

Error at bottom: 'Timeout or unexpected response communicating with device'.

Joyce