Yes, Bosch_SHUTTLE_BHI260_AK09915_turbo-flash.fw is for standalone boot mode. Flash means booting from Flash.
As you didn't use externaal XiP Flash for standalone boot mode, you could use Bosch_SHUTTLE_BHI260_AK09915.fw.
For detailed boot mode description, you could refer chapter 5.2 BHI260AB Initialization and Boot Modes from data sheet.
Really thanks for your support.
My request is the ""TURBO"" mode firmware for AK09915.
So, the "Bosch_SHUTTLE_BHI260_AK09915.fw." is for turbo mode?
If you install development desktop software, you could find firmware under folder "C:\Program Files\Bosch Sensortec\Development Desktop 2.0\Firmware\BHI260\RAM Images".
Attachement is BHI260 fw for turbo mode.