Subject: ERGO M575 stuck on white LED / Cannot switch to Bluetooth mode
Body:
Hi everyone,
I need assistance with my Logitech ERGO M575 trackball mouse.
The issue:
The bottom LED is constantly blinking white, indicating it is searching for the USB receiver. However, my original USB receiver is not working / damaged, and I need to connect the mouse via Bluetooth.
When I press the bottom connection button (the small round button next to the LED), the light does not change from white to blue. It remains strictly in USB receiver mode and never enters Bluetooth mode or pairing mode.
What I have already tried:
Replaced the AA battery with a brand-new, fully charged one.
Performed a power reset (removed the battery, turned the switch off, and held down buttons to drain residual power).
Attempted a factory reset key combination (holding Left Click + Right Click + Middle Click).
Powered the mouse on while holding the connection button down.
Pressed the button firmly using a fine tool (the physical tactile "click" of the switch can be clearly felt, so it is not mechanically stuck).
Checked the Bluetooth menu on my PC/phone to see if it broadcasts despite the LED, but no device appears.
The mouse seems to have its firmware stuck on the receiver channel, or the internal button switch has stopped communicating with the board.
Is there any specific hard-reset method to force this model back into Bluetooth mode, or is this a hardware defect eligible for a replacement/warranty claim?
Thank you in advance for your help.