diff --git a/src/API/App/AppResource.php b/src/API/App/AppResource.php
index 6d4eec101..3487908e8 100644
--- a/src/API/App/AppResource.php
+++ b/src/API/App/AppResource.php
@@ -200,7 +200,7 @@ abstract class AppResource extends Resource implements RetrieveInterface, Create
      */
     protected function mapModifiedRecords($records)
     {
-        if ($records instanceof Collection){
+        if ($records instanceof Collection) {
             return $records->mapToGroups(function ($item, $key) {
                 return [$item['id'] => $item];
             })->toArray();
@@ -210,7 +210,7 @@ abstract class AppResource extends Resource implements RetrieveInterface, Create
             $accumulator[$item['id']] = $item;
 
             return $accumulator;
-        });
+        }) ?: [];
     }
 
     /**
diff --git a/src/API/App/v1/Flash/Intervento.php b/src/API/App/v1/Flash/Intervento.php
new file mode 100644
index 000000000..96a4d8721
--- /dev/null
+++ b/src/API/App/v1/Flash/Intervento.php
@@ -0,0 +1,96 @@
+<?php
+/*
+ * OpenSTAManager: il software gestionale open source per l'assistenza tecnica e la fatturazione
+ * Copyright (C) DevCode s.r.l.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace API\App\v1\Flash;
+
+use API\App\v1\AllegatiInterventi;
+use API\App\v1\Clienti;
+use API\App\v1\Interventi;
+use API\App\v1\RigheInterventi;
+use API\App\v1\SessioniInterventi;
+use API\Interfaces\UpdateInterface;
+use API\Resource;
+use Carbon\Carbon;
+
+class Intervento extends Resource implements UpdateInterface
+{
+    public function update($request)
+    {
+        // Elenco risorse API
+        $risorse = [
+            'cliente' => new Clienti(),
+            'intervento' => new Interventi(),
+
+            'righe' => new RigheInterventi(),
+            'sessioni' => new SessioniInterventi(),
+            'allegati' => new AllegatiInterventi(),
+        ];
+        $sezioni = array_keys($risorse);
+
+        // Generazione record semplificati
+        $records = [];
+        foreach ($sezioni as $sezione) {
+            if (isset($request[$sezione][0])) {
+                foreach ($request[$sezione] as $record) {
+                    $records[] = [$record, $risorse[$sezione]];
+                }
+            } else {
+                $records[] = [$request[$sezione], $risorse[$sezione]];
+            }
+        }
+
+        // Controlli sui conflitti
+        $conflict = false;
+        foreach ($records as $key => [$record, $risorsa]) {
+            $record['updated_at'] = new Carbon($record['updated_at']);
+            $record['last_sync_at'] = new Carbon($record['last_sync_at']);
+            if (!$record['updated_at']->greaterThan($record['last_sync_at'])) {
+                unset($records[$key]);
+                continue;
+            }
+
+            $modifiche = $risorsa->getModifiedRecords($record['last_sync_at']);
+            $modifiche = array_keys($modifiche);
+
+            if (in_array($record['id'], $modifiche)) {
+                $conflict = true;
+                break;
+            }
+        }
+
+        // Messaggio di conflitto in caso di problematica riscontrata
+        if ($conflict) {
+            return [
+                'status' => 200,
+                'message' => 'CONFLICT',
+            ];
+        }
+
+        // Salvataggio delle modifiche
+        foreach ($records as [$record, $risorsa]) {
+            if (!empty($record['remote_id'])) {
+                $risorsa->updateRecord($record);
+            } else {
+                $risorsa->createRecord($record);
+            }
+        }
+
+        return [];
+    }
+}
diff --git a/update/2_4_22.sql b/update/2_4_22.sql
index cb5b1b877..2f1e6054d 100644
--- a/update/2_4_22.sql
+++ b/update/2_4_22.sql
@@ -191,4 +191,7 @@ ALTER TABLE `or_ordini` ADD `codice_commessa` VARCHAR(100) NULL AFTER `updated_a
 UPDATE `or_ordini` SET `numero_cliente`= `id_documento_fe` WHERE `id_documento_fe`!='' AND `id_documento_fe` IS NOT NULL;
 
 -- Fix nome file con il tipo documento di vendita
-UPDATE `zz_prints` SET `filename` = '{tipo_documento} num. {numero} del {data}' WHERE `zz_prints`.`name` = 'Fattura di vendita'; 
\ No newline at end of file
+UPDATE `zz_prints` SET `filename` = '{tipo_documento} num. {numero} del {data}' WHERE `zz_prints`.`name` = 'Fattura di vendita'; 
+-- Risorsa API per sincronizzazione rapida di un singolo intervento
+INSERT INTO `zz_api_resources` (`id`, `version`, `type`, `resource`, `class`, `enabled`) VALUES
+(NULL, 'app-v1', 'update', 'intervento-flash', 'API\\App\\v1\\Flash\\Intervento', '1');