diff --git a/src/ui/windows/bootstrap_download_dialog.h b/src/ui/windows/bootstrap_download_dialog.h
index d31f4aa..abccb96 100644
--- a/src/ui/windows/bootstrap_download_dialog.h
+++ b/src/ui/windows/bootstrap_download_dialog.h
@@ -45,6 +45,7 @@ public:
         s_state = State::Confirm;
         s_bootstrap.reset();
         s_errorMsg.clear();
+        s_lastUrl.clear();
         s_wasDaemonRunning = false;
     }
 
@@ -314,9 +315,15 @@ private:
 
         float btnW = 120.0f * dp;
         if (TactileButton(TR("retry"), ImVec2(btnW, 0))) {
-            startDownload("");
+            startDownload(s_lastUrl);   // keep the user's source/mirror choice (was startDownload(""))
         }
         ImGui::SameLine();
+        {
+            const std::string mirrorUrl = std::string(util::Bootstrap::kMirrorUrl) + "/" + util::Bootstrap::kZipName;
+            if (s_lastUrl != mirrorUrl && TactileButton(TR("bootstrap_try_mirror"), ImVec2(130.0f * dp, 0)))
+                startDownload(mirrorUrl);
+            ImGui::SameLine();
+        }
         if (TactileButton(TR("close"), ImVec2(90.0f * dp, 0))) {
             s_app->setBootstrapDownloading(false);
             s_open = false;
@@ -336,6 +343,7 @@ private:
             s_bootstrap->start(dataDir);
         else
             s_bootstrap->start(dataDir, url);
+        s_lastUrl = url;   // remember what we started (set only after the guards passed)
         s_state = State::Downloading;
         s_errorMsg.clear();
         s_cancelling = false;
@@ -347,6 +355,7 @@ private:
     static inline std::unique_ptr<util::Bootstrap> s_bootstrap;
     static inline bool s_wasDaemonRunning = false;
     static inline bool s_cancelling = false;  // cancel requested; disables the Cancel button until the worker stops
+    static inline std::string s_lastUrl;      // last source started ("" = default); so Retry keeps the mirror choice
     static inline std::string s_errorMsg;
 };
 
diff --git a/src/ui/windows/validate_address_dialog.cpp b/src/ui/windows/validate_address_dialog.cpp
index 4c8daa0..07b6d91 100644
--- a/src/ui/windows/validate_address_dialog.cpp
+++ b/src/ui/windows/validate_address_dialog.cpp
@@ -91,7 +91,8 @@ void ValidateAddressDialog::render(App* app)
         ImGui::Spacing();
         
         // Validate button
-        bool can_validate = strlen(s_address_input) > 0 && !s_validating && app->isConnected();
+        // Classification + checksum are LOCAL, so allow validating offline (the is-mine check needs the node).
+        bool can_validate = strlen(s_address_input) > 0 && !s_validating;
         
         if (!can_validate) {
             ImGui::BeginDisabled();
@@ -123,8 +124,9 @@ void ValidateAddressDialog::render(App* app)
                 s_address_type.clear();
                 s_validated = true;
                 s_validating = false;
-            } else if (app->isLiteBuild()) {
-                // Lite has no node to ask: the checksum verdict is the answer, ownership is unknown (hidden).
+            } else if (app->isLiteBuild() || !app->isConnected()) {
+                // No node to ask (lite, or full-node offline): the checksum verdict is the answer; ownership
+                // is unknown. The result block shows why.
                 s_is_valid = true;
                 s_is_mine = false;
                 s_ownership_known = false;
@@ -209,15 +211,17 @@ void ValidateAddressDialog::render(App* app)
                     ImGui::SameLine(lbl.position);
                     ImGui::Text("%s", s_address_type.c_str());
                     
-                    // Is mine? (not shown when no node was asked - lite)
-                    if (s_ownership_known) {
-                        ImGui::Text("%s", TR("validate_ownership"));
-                        ImGui::SameLine(lbl.position);
-                        if (s_is_mine) {
-                            ImGui::TextColored(ImVec4(0.3f, 0.8f, 0.3f, 1.0f), "%s", TR("validate_is_mine"));
-                        } else {
-                            ImGui::TextDisabled("%s", TR("validate_not_mine"));
-                        }
+                    // Is mine? When no node was asked (lite / offline) say why ownership is unknown rather
+                    // than silently omitting it.
+                    ImGui::Text("%s", TR("validate_ownership"));
+                    ImGui::SameLine(lbl.position);
+                    if (!s_ownership_known) {
+                        ImGui::TextDisabled("%s", TR(app->isLiteBuild() ? "validate_ownership_unknown_lite"
+                                                                        : "validate_ownership_unknown_offline"));
+                    } else if (s_is_mine) {
+                        ImGui::TextColored(ImVec4(0.3f, 0.8f, 0.3f, 1.0f), "%s", TR("validate_is_mine"));
+                    } else {
+                        ImGui::TextDisabled("%s", TR("validate_not_mine"));
                     }
                     if (s_is_mining) {   // valid, but not for payments
                         ImGui::Spacing();
@@ -227,8 +231,6 @@ void ValidateAddressDialog::render(App* app)
                     }
                 }
             }
-        } else if (!app->isConnected()) {
-            ImGui::TextColored(ImVec4(1.0f, 0.6f, 0.0f, 1.0f), "%s", TR("not_connected"));
         } else {
             // Pre-interaction placeholder: keeps the results area from reading as a large
             // dead gap between the Validate/Paste row and the Close button until a result exists.
diff --git a/src/util/i18n.cpp b/src/util/i18n.cpp
index 3325fae..b3a165a 100644
--- a/src/util/i18n.cpp
+++ b/src/util/i18n.cpp
@@ -688,6 +688,7 @@ void I18n::loadBuiltinEnglish()
         strings_["wiz_bootstrap_desc"] = "Download a blockchain bootstrap to dramatically speed up initial sync.\n\nYour existing wallet.dat will NOT be modified or replaced.";
         strings_["wiz_skip"] = "Skip";
         strings_["wiz_bootstrap_failed"] = "Bootstrap failed";
+        strings_["bootstrap_try_mirror"] = "Try mirror";
         strings_["wiz_download_failed"] = "Download Failed";
         strings_["wiz_ext_daemon_running"] = "External daemon running";
         strings_["wiz_ext_daemon_warning"] = "It must be stopped before downloading a bootstrap, otherwise chain data could be corrupted.";
@@ -2723,6 +2724,8 @@ void I18n::loadBuiltinEnglish()
         strings_["validate_invalid"] = "INVALID";
         strings_["validate_is_mine"] = "This wallet owns this address";
         strings_["validate_not_mine"] = "Not owned by this wallet";
+        strings_["validate_ownership_unknown_offline"] = "Unknown — node offline";
+        strings_["validate_ownership_unknown_lite"] = "Unknown — not checkable in the lite wallet";
         strings_["validate_ownership"] = "Ownership:";
         strings_["validate_results"] = "Results:";
         strings_["validate_results_placeholder"] = "Results will appear here";