Bose NC 700: FW Struck in 1.3.1-2028 de73ce1

I'm not able to update my headphone's firmware to 1.5.1 it is struck in 1.3.1-2028 de73ce1 both In bose music App and btu.bose.com website as both of them say my headphone is up-to-date with version 1.3.1.

 

I want to update to 1.5.1 because current headphone has stuttering audio issue when the headset is in multipoint with a Mac or PC which update 1.5.1 is supposed to fix as per this:https://community.bose.com/t5/Around-On-Ear-Headphones/Noise-Cancelling-700-Firmware-Update-1-4-12-May-12th-2020/td-p/300552.

 

-Vinoth