Motors not beeps OK sign in 4.1.1-EA3 performance edition on IMPULSERCF3

[aQuaplug]

Hi. I'm using LittleBee ESCs with 16.73 firmware.
Motor beeps last OK (high-tone)beeps before 4.1.1-EA3
And I flashed FC to 4.1.1-EA3. After that not beeps OK sign. Only beeps initial beeps.
Only IMPULSERCF3 has problem with DSHOT among my F3s, I've set RPM Filter well with other F3 FCs..
After that, motors not beeps last sign.

[aQuaplug]

I test other BLHeli32 ESCs. Not beeps OK sign same.
I think problem could be initial throttle recognize.
Cause some testing I heard ESC calibration beeps without RX and without touching settings.
But sadly I don't know solution.

And I built 4.1.1 firmware with BLHeli bootloader function.
When I set ONESHOT in betaflight, bootloader works, otherwise when I set DSHOT, bootloader cannot read ESC.
With 3.5.6 firmware(Last official IMPULSERCF3 firmware with bootloader) works fine.
And DSHOT works on 4.0.5, only not works after 4.0.6.

If anyone has clue of this, just throw that to me. I love my Helix frame, and cursed FC specialized for Helix frame.