diff --git a/1.2/ArmnnDriver.hpp b/1.2/ArmnnDriver.hpp
index a350d3f..c855b52 100644
--- a/1.2/ArmnnDriver.hpp
+++ b/1.2/ArmnnDriver.hpp
@@ -19,6 +19,8 @@
 #include "../1.0/ArmnnDriverImpl.hpp"
 #include "../1.0/HalPolicy.hpp"
 
+#include <armnn/BackendHelper.hpp>
+
 #include <log/log.h>
 
 namespace armnn_driver
@@ -135,20 +137,26 @@
     }
 
     Return<V1_0::ErrorStatus> prepareModelFromCache(
-            const android::hardware::hidl_vec<android::hardware::hidl_handle>&,
-            const android::hardware::hidl_vec<android::hardware::hidl_handle>&,
-            const HidlToken&,
-            const android::sp<V1_2::IPreparedModelCallback>& callback)
+        const android::hardware::hidl_vec<android::hardware::hidl_handle>& modelCacheHandle,
+        const android::hardware::hidl_vec<android::hardware::hidl_handle>& dataCacheHandle,
+        const HidlToken& token,
+        const android::sp<V1_2::IPreparedModelCallback>& cb)
     {
         ALOGV("hal_1_2::ArmnnDriver::prepareModelFromCache()");
-        callback->notify_1_2(V1_0::ErrorStatus::GENERAL_FAILURE, nullptr);
-        return V1_0::ErrorStatus::GENERAL_FAILURE;
+        return ArmnnDriverImpl::prepareModelFromCache(m_Runtime,
+                                                      m_Options,
+                                                      modelCacheHandle,
+                                                      dataCacheHandle,
+                                                      token,
+                                                      cb);
     }
 
-    Return<V1_0::ErrorStatus> prepareModel_1_2(const V1_2::Model& model, V1_1::ExecutionPreference preference,
-            const android::hardware::hidl_vec<android::hardware::hidl_handle>&,
-            const android::hardware::hidl_vec<android::hardware::hidl_handle>&, const HidlToken&,
-            const android::sp<V1_2::IPreparedModelCallback>& cb)
+    Return<V1_0::ErrorStatus> prepareModel_1_2(
+        const V1_2::Model& model, V1_1::ExecutionPreference preference,
+        const android::hardware::hidl_vec<android::hardware::hidl_handle>& modelCacheHandle,
+        const android::hardware::hidl_vec<android::hardware::hidl_handle>& dataCacheHandle,
+        const HidlToken& token,
+        const android::sp<V1_2::IPreparedModelCallback>& cb)
     {
         ALOGV("hal_1_2::ArmnnDriver::prepareModel_1_2()");
 
@@ -165,6 +173,9 @@
                                                       m_ClTunedParameters,
                                                       m_Options,
                                                       model,
+                                                      modelCacheHandle,
+                                                      dataCacheHandle,
+                                                      token,
                                                       cb,
                                                       model.relaxComputationFloat32toFloat16
                                                       && m_Options.GetFp16Enabled());
@@ -198,9 +209,12 @@
     Return<void> getNumberOfCacheFilesNeeded(getNumberOfCacheFilesNeeded_cb cb)
     {
         ALOGV("hal_1_2::ArmnnDriver::getSupportedExtensions()");
-
-        // Set both numbers to be 0 for cache not supported.
-        cb(V1_0::ErrorStatus::NONE, 0, 0);
+        unsigned int numberOfCachedModelFiles = 0;
+        for (auto& backend : m_Options.GetBackends())
+        {
+            numberOfCachedModelFiles += GetNumberOfCacheFiles(backend);
+        }
+        cb(V1_0::ErrorStatus::NONE, numberOfCachedModelFiles,   1ul);
         return Void();
     }
 };