persist.sys.yfcamerarotation cannot be set via Blueprint Custom Commands — use factory provisioning or custom OEM firmware instead

Android

You cannot configure USB camera rotation using the persist.sys.yfcamerarotation system property through Esper Blueprint Custom Commands. This article explains why and shows you the supported alternatives.

Why Blueprint Custom Commands won't work for this property

Blueprint Custom Commands can only modify Android Settings provider keys (in the global, secure, or system namespaces). The persist.sys.yfcamerarotation property is an Android system property managed at the OS level, not through the Settings API. Because of this fundamental difference, you cannot configure it through the Blueprint settings block.

Before you begin

Determine which approach best fits your deployment:

You have ADB access to devices before they're enrolled in Esper
You can request a custom Android firmware image from your device manufacturer
You need a scalable solution for an entire fleet

Option 1: Set the property via ADB during warehouse provisioning

If you have access to devices before enrollment, you can configure the property manually on each device using ADB.

Connect your device via USB and open a terminal or command prompt.
Set the property to your desired value (for example, 0):
```
adb shell setprop persist.sys.yfcamerarotation 0
```
Reboot the device to ensure the value persists:
```
adb reboot
```
Verify the property retained its value after the reboot:
```
adb shell getprop persist.sys.yfcamerarotation
```
Repeat for each device in your batch before enrolling them into Esper.

Option 2: Use custom OEM firmware

For a scalable fleet deployment, request that your device manufacturer provide an Android image with persist.sys.yfcamerarotation pre-configured at the OS build level. This eliminates the need for per-device ADB provisioning and ensures the value persists across all device reboots.

Verify the camera orientation after deployment

Regardless of which approach you choose, confirm the camera orientation is correct on boot and that the property is retained across reboots:

Boot the device.
Check the camera orientation visually or through your application.
Reboot the device again.
Verify the orientation is still correct (optionally, confirm via ADB: adb shell getprop persist.sys.yfcamerarotation).

Limitations and known issues

persist.sys.yfcamerarotation is OEM-specific. Supported values and behavior may vary by manufacturer and firmware version. Consult your device documentation.
Blueprint Custom Commands can only modify Android Settings provider keys. It cannot be used for persist.sys.*, ro.*, or other non-Settings-provider system properties.
Camera orientation changes made through the Android Connected Devices UI do not persist across reboots and therefore are not a reliable configuration method.
This limitation applies regardless of device mode (kiosk or multi-app).

Still need help?

If you encounter issues setting the property via ADB, need assistance requesting custom firmware from your manufacturer, or want to discuss alternative solutions, contact Esper Support.