Gemini Nano: AICore failed with error type 1-DOWNLOAD_ERROR and error code 0-UNKNOWN: Feature is unavailable

I followed the guide to run the sample app on a Pixel 9 Pro XL device with Android AICore (beta) and the required Private Compute Service.
https://developer.android.com/ai/gemini-nano/experimental

But getting below error

E Failed to check model availability.
com.google.ai.edge.aicore.DownloadException: AICore failed with error type 1-DOWNLOAD_ERROR and error code 0-UNKNOWN: Feature is unavailable.
at com.google.ai.edge.aicore.GenerativeAIException$Companion.from$java_com_google_android_apps_aicore_client_client(com.google.ai.edge.aicore:aicore@@0.0.1-exp01:5)
at com.google.ai.edge.aicore.GenerativeModel$prepareInferenceEngine$2.invokeSuspend(com.google.ai.edge.aicore:aicore@@0.0.1-exp01:9)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
at java.lang.Thread.run(Thread.java:1012)

Android AICore (beta) version: 0.thirdpartyeap.ffdf_aicore_20250109.00_RC01.715961659
Private Compute Service version: 1.0.release.696479765

Is there any thing else that needs to be done?