diff --git a/app/Classes/AttachmentsManager.php b/app/Classes/AttachmentsManager.php
index d9cca13..753cc2d 100644
--- a/app/Classes/AttachmentsManager.php
+++ b/app/Classes/AttachmentsManager.php
@@ -94,23 +94,36 @@ public function add(array $data): string
         if (!empty($data['contents'])) {
             // Adding from an image resource of which $data['contents'] is a
             // representation
-            $contents = $data['contents'];
+            $contents    = $data['contents'];
+            $checksum    = md5($contents);
+            $existingRef = $this->findAttachmentByChecksum($checksum);
+
+            if (!empty($existingRef)) {
+                return $existingRef;
+            }
+
+            $data['checksum'] = $checksum;
 
             unset($data['contents']);
-        } elseif (!empty($data['url'])) {
-            $existingRef = $this->findAttachmentByOriginalUrl($data['url']);
+        } elseif (!empty($data['original_url'])) {
+            $existingRef = $this->findAttachmentByOriginalUrl($data['original_url']);
 
             if (!empty($existingRef)) {
                 return $existingRef;
             }
 
             // Adding from a URL which implies downloading the resource
-            $contents = Http::throw()->get($data['url'])->body();
+            $contents    = Http::throw()->get($data['original_url'])->body();
+            $checksum    = md5($contents);
+            $existingRef = $this->findAttachmentByChecksum($checksum);
 
-            $data['filename']     = basename($data['url']);
-            $data['original_url'] = $data['url'];
+            if (!empty($existingRef)) {
+                return $existingRef;
+            }
 
-            unset($data['url']);
+            $data['checksum'] = $checksum;
+
+            $data['filename'] = basename($data['original_url']);
         }
 
         $filename     = $this->getFormatedFilename($data['filename']);
@@ -356,6 +369,20 @@ private function findAttachmentByOriginalUrl(string $url)
         return null;
     }
 
+    /**
+     * Find an attachment from file's checksum, if specified
+     */
+    private function findAttachmentByChecksum(string $checksum)
+    {
+        foreach ($this->manager->get('files', []) as $ref => $data) {
+            if (array_key_exists('checksum', $data) && $data['checksum'] === $checksum) {
+                return $ref;
+            }
+        }
+
+        return null;
+    }
+
     /**
      * Generate new, random reference for a file
      */
diff --git a/app/Console/Commands/Bundle/Traits/ReadsBundles.php b/app/Console/Commands/Bundle/Traits/ReadsBundles.php
new file mode 100644
index 0000000..d14a700
--- /dev/null
+++ b/app/Console/Commands/Bundle/Traits/ReadsBundles.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Console\Commands\Bundle\Traits;
+
+use App\Classes\Bundle;
+
+trait ReadsBundles
+{
+    protected $bundles;
+
+    /**
+     * Collect a list of bundles to validate
+     */
+    protected function selectBundles(): self
+    {
+        $path    = $this->argument('path') ?? '/';
+        $comment = sprintf('Validating <info>%s</info>', $path);
+
+        if ($this->option('recursive')) {
+            $comment .= ' and <info>all sub-bundles</info>';
+        }
+
+        $this->line($comment);
+        $this->output->write('Collecting bundles... ');
+
+        if ($this->option('recursive')) {
+            $bundles = Bundle::findBundles($this->sourceDisk, $path, true);
+        } else {
+            $bundles = [new Bundle($path, $this->sourceDisk)];
+        }
+
+        $this->bundles = $bundles;
+
+        $this->info('OK');
+
+        return $this;
+    }
+}
diff --git a/app/Console/Commands/Bundle/Traits/SelectsDisks.php b/app/Console/Commands/Bundle/Traits/SelectsDisks.php
new file mode 100644
index 0000000..7bc0fc1
--- /dev/null
+++ b/app/Console/Commands/Bundle/Traits/SelectsDisks.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Console\Commands\Bundle\Traits;
+
+use Illuminate\Contracts\Filesystem\Filesystem;
+use Illuminate\Support\Facades\Storage;
+
+trait SelectsDisks
+{
+    protected Filesystem $sourceDisk;
+
+    /**
+     * Select the disk we will be working on
+     */
+    private function selectDisk(): self
+    {
+        $sourceDisk = $this->option('source-disk') ?? env('CONTENT_DISK');
+
+        $this->sourceDisk = Storage::disk($sourceDisk);
+
+        $this->line(
+            sprintf(
+                'Using <info>%s</info> as source disk',
+                $sourceDisk
+            )
+        );
+
+        return $this;
+    }
+}
diff --git a/app/Console/Commands/Bundle/Update.php b/app/Console/Commands/Bundle/Update.php
index c6c50dc..be78959 100644
--- a/app/Console/Commands/Bundle/Update.php
+++ b/app/Console/Commands/Bundle/Update.php
@@ -3,20 +3,19 @@
 namespace App\Console\Commands\Bundle;
 
 use App\Classes\Bundle;
+use App\Console\Commands\Bundle\Traits\ReadsBundles;
+use App\Console\Commands\Bundle\Traits\SelectsDisks;
 use App\Exceptions\BundleUpdaterCannotBeFound;
 use App\Exceptions\UnableToFindWikidataEntityId;
 use App\Services\BundleUpdaters\Facades\BundleUpdater;
 use Illuminate\Console\Command;
-use Illuminate\Support\Facades\Storage;
+
+use function Laravel\Prompts\progress;
 
 class Update extends Command
 {
-    /**
-     * The name and signature of the console command.
-     *
-     * @var string
-     */
-    protected $signature = 'bundle:update { path? : Path to a specific bundle to update }';
+    use ReadsBundles;
+    use SelectsDisks;
 
     /**
      * The console command description.
@@ -25,48 +24,113 @@ class Update extends Command
      */
     protected $description = 'Update bundles extended metadata';
 
+    protected $notUpdatable = [];
+
+    protected $updatedCount = 0;
+
+    protected $notUpdatedCount = 0;
+
+    public function __construct()
+    {
+        $this->signature = 'bundle:update 
+            { --r|recursive     : Also validate sub-bundles } 
+            { --source-disk=    : Use specified content disk - Defaults to <info>' . env('CONTENT_DISK') . '</info> }
+            { path?             : Path to a specific bundle to validate - Default to <info>/</info> }
+        ';
+
+        parent::__construct();
+    }
+
     /**
      * Execute the console command.
      */
     public function handle()
     {
-        $path    = $this->argument('path') ?? '/';
-        $bundles = Bundle::findBundles(Storage::disk(env('CONTENT_DISK')), $path, true);
+        $this->selectDisk()
+            ->selectBundles()
+            ->update()
+            ->showReport();
+    }
 
-        foreach ($bundles as $bundle) {
-            $this->output->write(sprintf('Updating %s... ', $bundle->getPath()));
+    /**
+     * Updates specific bundle
+     */
+    protected function handleBundle(Bundle $bundle, $progress)
+    {
+        $progress->hint(sprintf('Updated %s', $bundle->getPath()));
 
-            try {
-                $updater = BundleUpdater::getBundleUpdaterFor($bundle);
-            } catch (BundleUpdaterCannotBeFound $ex) {
-                $this->line('Not updatable');
+        try {
+            $updater = BundleUpdater::getBundleUpdaterFor($bundle);
+        } catch (BundleUpdaterCannotBeFound $ex) {
+            return;
+        }
 
-                continue;
-            }
+        try {
+            while (!$updater->canUpdateBundle()) {
+                $specs = $updater->formSpecs();
 
-            try {
-                while (!$updater->canUpdateBundle()) {
-                    $specs = $updater->formSpecs();
-
-                    foreach ($specs as $key => $func) {
-                        $result = $func();
-                        $bundle->metadata()->set($key, $result);
-                        $bundle->save();
-                    }
+                foreach ($specs as $key => $func) {
+                    $result = $func();
+                    $bundle->metadata()->set($key, $result);
+                    $bundle->save();
                 }
-            } catch (UnableToFindWikidataEntityId $ex) {
-                $this->comment('Unable to find wikidata entity Id');
-
-                continue;
             }
+        } catch (UnableToFindWikidataEntityId $ex) {
+            $this->notUpdatable[$bundle->getPath()] = 'Missing Wikidata Entity Id';
 
-            $result = $updater->update();
+            return;
+        }
 
-            if ($result) {
-                $this->info('OK');
-            } else {
-                $this->comment('Update not needed');
-            }
+        $result = $updater->update();
+
+        if ($result) {
+            $this->updatedCount++;
+        } else {
+            $this->notUpdatedCount++;
+        }
+    }
+
+    /**
+     * Performs update on selected bundles
+     */
+    private function update(): self
+    {
+        progress('Updating bundles...', $this->bundles, function (Bundle $bundle, $progress) {
+            $this->handleBundle($bundle, $progress);
+        });
+
+        return $this;
+    }
+
+    /**
+     * Show a report of update procedure
+     */
+    private function showReport()
+    {
+        $this->line(sprintf('Updated bundles: <info>%d</info>', $this->updatedCount));
+        $this->line(sprintf('Update not needed: <comment>%d</comment>', $this->notUpdatedCount));
+
+        $this->reportNonUpdatable();
+    }
+
+    /**
+     * Show report of non updatable bundles
+     */
+    private function reportNonUpdatable()
+    {
+        $count = count($this->notUpdatable);
+
+        if ($count === 0) {
+            return;
+        }
+
+        $this->newLine();
+        $this->line(sprintf('Not updatable bundles: <comment>%d</comment>', $count));
+
+        foreach ($this->notUpdatable as $bundle => $reason) {
+            $this->newLine();
+            $this->comment($bundle);
+            $this->line(sprintf(' > %s', $reason));
         }
     }
 }
diff --git a/app/Console/Commands/Bundle/Upgrade.php b/app/Console/Commands/Bundle/Upgrade.php
index 1a77aa1..2000713 100644
--- a/app/Console/Commands/Bundle/Upgrade.php
+++ b/app/Console/Commands/Bundle/Upgrade.php
@@ -40,6 +40,9 @@ public function handle()
             $bundle->metadata('links')->clear();
             $bundle->metadata('links')->save();
 
+            $bundle->metadata('rebrickable')->clear();
+            $bundle->metadata('rebrickable')->save();
+
             $bundle->save();
 
             $this->info('OK');
diff --git a/app/Services/BundleUpdaters/Updaters/LegoUpdater.php b/app/Services/BundleUpdaters/Updaters/LegoUpdater.php
index a5295a7..f8cd8d4 100644
--- a/app/Services/BundleUpdaters/Updaters/LegoUpdater.php
+++ b/app/Services/BundleUpdaters/Updaters/LegoUpdater.php
@@ -72,8 +72,8 @@ public function update()
 
         if (!empty($setData['set_img_url'])) {
             $ref = $this->bundle->attachments(AttachmentsManager::Images)->add([
-                'url'         => $setData['set_img_url'],
-                'attribution' => '&copy; [Rebrickable](https://rebrickable.com/)',
+                'original_url' => $setData['set_img_url'],
+                'attribution'  => '&copy; [Rebrickable](https://rebrickable.com/)',
             ]);
 
             $this->bundle->metadata()->set('cover', $ref);
@@ -86,8 +86,8 @@ public function update()
                 }
 
                 $this->bundle->attachments(AttachmentsManager::Images)->add([
-                    'url'         => $minifig['set_img_url'],
-                    'attribution' => '&copy; [Rebrickable](https://rebrickable.com/)',
+                    'original_url' => $minifig['set_img_url'],
+                    'attribution'  => '&copy; [Rebrickable](https://rebrickable.com/)',
                 ]);
             }
         }