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ROG KUNAI 3 Update cause issue in Rog Phone 5

Rising Star I
Please tell us some basic information before asking for help:
Model Name: ROG PHONE 5 / ROG KUNAI 3
Firmware Version: 18.0840.2104.56 / 3.1.0
Rooted or not: not
Frequency of Occurrence: Always
APP Name & APP Version (If your issue relates to the app): Home screen, Genshin Impact, basically the controller not able to be detected anymore, it keep connecting and disconnecting the in the same time repeatedly without stop once attached the controller
Recently there is an ROG KUNAI 3 accessories update, if not mistaken it is 3.1.0 version, once this update installed.
When ROG KUNAI 3 attach to ROG PHONE 5 with the ROG KUNAI Case, the controller not working normally anymore.
It keep pop out the 'attached device is not compatible...' (please refer to pictures below)
The controller light keep turning on and off with light green light (before update it will having deep green light)
I try to perform control calibration from the youtube instructions but it still didn't fix anything.
I would like to revert my ROG KUNAI 3 Controller back to 3.0.8 version which these issue won't occurred at all.
or please suggest me a solution for this issue.