Hi Tmedani,
Thank you for your help.
I also looked into another topic: NIRstorm: Importing NIRx files. The sfnirs file was created by the NIRx NIRSport 2 system and Aurora fNIRS, instead of the NIRx NIRScout system and NIRStar. The probes display correctly in Brainstorm in this case.
Thanks again,
Xiaoxiao