diff --git a/nx/include/switch/services/fs.h b/nx/include/switch/services/fs.h
index d1e22cf0d..0cc7d60f7 100644
--- a/nx/include/switch/services/fs.h
+++ b/nx/include/switch/services/fs.h
@@ -650,7 +650,9 @@ Result fsDeviceOperatorIsGameCardInserted(FsDeviceOperator* d, bool* out);
 Result fsDeviceOperatorGetGameCardHandle(FsDeviceOperator* d, FsGameCardHandle* out);
 Result fsDeviceOperatorGetGameCardUpdatePartitionInfo(FsDeviceOperator* d, const FsGameCardHandle* handle, FsGameCardUpdatePartitionInfo* out);
 Result fsDeviceOperatorGetGameCardAttribute(FsDeviceOperator* d, const FsGameCardHandle* handle, u8 *out);
+Result fsDeviceOperatorGetGameCardDeviceCertificate(FsDeviceOperator* d, const FsGameCardHandle* handle, void* dst, size_t dst_size, s64 size);
 Result fsDeviceOperatorGetGameCardIdSet(FsDeviceOperator* d, void* dst, size_t dst_size, s64 size);
 Result fsDeviceOperatorGetGameCardErrorReportInfo(FsDeviceOperator* d, FsGameCardErrorReportInfo* out);
 Result fsDeviceOperatorGetGameCardDeviceId(FsDeviceOperator* d, void* dst, size_t dst_size, s64 size);
+Result fsDeviceOperatorChallengeCardExistence(FsDeviceOperator* d, const FsGameCardHandle* handle, void* dst, size_t dst_size, void* seed, size_t seed_size, void* value, size_t value_size);
 void fsDeviceOperatorClose(FsDeviceOperator* d);
diff --git a/nx/source/services/fs.c b/nx/source/services/fs.c
index 946a5a742..f4d5612c1 100644
--- a/nx/source/services/fs.c
+++ b/nx/source/services/fs.c
@@ -1226,6 +1226,17 @@ Result fsDeviceOperatorGetGameCardAttribute(FsDeviceOperator* d, const FsGameCar
     return _fsObjectDispatchInOut(&d->s, 205, *handle, *out);
 }
 
+Result fsDeviceOperatorGetGameCardDeviceCertificate(FsDeviceOperator* d, const FsGameCardHandle* handle, void* dst, size_t dst_size, s64 size) {
+    const struct {
+        FsGameCardHandle handle;
+        s64 buffer_size;
+    } in = { *handle, size };
+    
+    return _fsObjectDispatchIn(&d->s, 206, in,
+        .buffer_attrs = { SfBufferAttr_HipcMapAlias | SfBufferAttr_Out },
+        .buffers = { { dst, dst_size } });
+}
+
 Result fsDeviceOperatorGetGameCardIdSet(FsDeviceOperator* d, void* dst, size_t dst_size, s64 size) {
     return _fsCmdInSizeOutBuffer(&d->s, dst, dst_size, size, 208);
 }
@@ -1242,6 +1253,24 @@ Result fsDeviceOperatorGetGameCardDeviceId(FsDeviceOperator* d, void* dst, size_
     return _fsCmdInSizeOutBuffer(&d->s, dst, dst_size, size, 218);
 }
 
+Result fsDeviceOperatorChallengeCardExistence(FsDeviceOperator* d, const FsGameCardHandle* handle, void* dst, size_t dst_size, void* seed, size_t seed_size, void* value, size_t value_size) {
+    if (hosversionBefore(8,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+    
+    return _fsObjectDispatchIn(&d->s, 219, *handle,
+        .buffer_attrs = {
+            SfBufferAttr_HipcMapAlias | SfBufferAttr_Out,
+            SfBufferAttr_HipcMapAlias | SfBufferAttr_In,
+            SfBufferAttr_HipcMapAlias | SfBufferAttr_In,
+        },
+        .buffers = {
+            { dst,   dst_size   },
+            { seed,  seed_size  },
+            { value, value_size },
+        },
+    );
+}
+
 void fsDeviceOperatorClose(FsDeviceOperator* d) {
     _fsObjectClose(&d->s);
 }