How can I downgrade bluez in fc43

Unfortunately, My TWS have some connect issue with bluez 5.84. I must downgrade to 5.82 to fix it
but i tried to use sudo dnf downgrade bluez , that said

ne0w0r1d@Ne0-Cyrene:~$ sudo dnf downgrade bluez
[sudo] ne0w0r1d 的密码:
仓库更新和加载中:
仓库加载完成。
The lowest available version of the "bluez.x86_64" package is already installed, cannot downgrade it.

Nothing to do.

What can I do that I can downgrade bluez?
My TWS is Moondrop Robin’s earphones

You should be able to just grab the older version directly from Koji here
It looks like 5.82 was flagged as obsoleted by 5.83 and deleted, but 5.81 is available. So you could just directly download those from Koji. Make sure to version lock the package if this works.

Thx a lot!
It can work now!