Hi @PPG, please tell us your AC180P’s SN number, and then we will help you downgrade the firmware.
Hi @PPG, Thank you for getting back to us so quickly.
The entire SN number is AC180P2438000641876.
Now I have applied to downgrade the firmware for you.
Our IT department will push the corresponding firmware to your unit in 24 hours. Please upgrade it tomorrow.
Please do not load any device when upgrading it.
Please let us know if it works.
Hi @PPG, Our IT department informed us that you have not upgraded yet, and therefore, downgrading is not possible.
Additionally, the Bluetooth password is hardware-related and cannot be disabled through a firmware downgrade.
The only solution is do not setting a password, which should not affect the use of your HA system.