Configuration: Add section about overriding the splash logo

Change-type: minor

pages/learn/manage/configuration.md

@@ -46,6 +46,12 @@ Clicking the small edit (pencil) icon will pop up a small dialog for editing the
 
 To remove the device level configuration, and reset it to its default value, click the delete (trash can) icon.
 
+## Overriding the splash screen
+
+To replace the {{ $names.company.lower }} logo with your custom splash logo, go to your Fleet or Device `Configuration` page and find the configuration for `Define the PNG image to be used for the boot splash screen. Only supported by supervisor versions >= v12.3.0.`. Click `activate` to upload your image.
+
+<img alt="Override the splash screen" src="/img/configuration/override_splash_screen_config.png" />
+
 ## Adding custom configuration
 
 The custom configuration section can be used to modify configuration options beyond the ones pre-populated for your device using the balenaCloud dashboard. Examples include, [modifying config.txt using configuration variables][boot-config-guide] for Raspberry Pi devices.

pages/reference/OS/advanced.md

@@ -117,11 +117,12 @@ dtoverlay=i2c-rtc,ds1307
 
 To disable the Raspberry Pi rainbow splash screen, add the `disable_splash=1` entry to `config.txt`.
 
-__Note:__ This setting disables the Raspberry Pi rainbow splash screen but does not disable the {{ $names.company.lower }} logo splash screen. If you would like to replace the {{ $names.company.lower }} logo with your custom splash logo, replace `splash/balena-logo.png` located in the [boot partition][boot-partition] of the image. Note that this file may be called `resin-logo.png` on older releases.
+__Note:__ This setting disables the Raspberry Pi rainbow splash screen but does not disable the {{ $names.company.lower }} logo splash screen. If you would like to replace the {{ $names.company.lower }} logo with your custom splash logo, you must do so via the [Configuration page][configuration-page].
 
 [boot-partition]:/reference/OS/overview/2.x/#image-partition-layout
 [config-txt]:https://www.raspberrypi.com/documentation/computers/config_txt.html
 [configuration]:/learn/manage/configuration
+[configuration-page]:/learn/manage/configuration/#overriding-the-splash-screen
 [configuration-list]:/reference/supervisor/configuration-list
 [configuration-fleet]:/learn/manage/configuration/#fleet-configuration-management
 [configuration-device]:/learn/manage/configuration/#device-configuration-management