These sounds may be related to the fast refresh update in August 2025, and may improve over time as we continue to tweak our device firmware.
Option 1: Fully charge your device (plug it in until the green light goes off, approximately 5 hours). This has resolved the issue for many customers.
Option 2: Adjust the temperature profiles. Requires firmware v1.7.1
Access your device's settings in the top-right, click on the gear icon for your device, then select Firmware, and try the different Temperature Profile settings for a day to see if it resolves and does not degrade the visual functionality of the display.
Let us know if one profile solved the issue for you (email support@usetrmnl.com).
The following options will disable fast refresh and 2-bit support from your device.
Option 3: Enable Maximum Compatibility mode from your device settings, Firmware section.
Option 4: Returning your device to version 1.5.12 firmware via our online web flashing tool can further diminish or remove the sound.
While both options 2 and 3 roll back our advanced fast refresh feature, they maintain the quality and features you were promised upon purchasing your device.