From 0ec4488dd17a9c9adb43ec17eb17859cbe9c5025 Mon Sep 17 00:00:00 2001
From: Damian Schneider <daedae@gmx.ch>
Date: Sun, 19 Oct 2025 07:08:18 +0200
Subject: [PATCH 1/2] adding function to check if a backup exists

---
 wled00/cfg.cpp       | 4 ++++
 wled00/fcn_declare.h | 2 ++
 wled00/file.cpp      | 6 ++++++
 3 files changed, 12 insertions(+)

diff --git a/wled00/cfg.cpp b/wled00/cfg.cpp
index 840afb51ba..b5a0574403 100644
--- a/wled00/cfg.cpp
+++ b/wled00/cfg.cpp
@@ -777,6 +777,10 @@ bool verifyConfig() {
   return validateJsonFile(s_cfg_json);
 }
 
+bool configBackupExists() {
+  return checkBackupExists(s_cfg_json);
+}
+
 // rename config file and reboot
 // if the cfg file doesn't exist, such as after a reset, do nothing
 void resetConfig() {
diff --git a/wled00/fcn_declare.h b/wled00/fcn_declare.h
index 1d81655d6d..78e97c7075 100644
--- a/wled00/fcn_declare.h
+++ b/wled00/fcn_declare.h
@@ -27,6 +27,7 @@ void IRAM_ATTR touchButtonISR();
 bool backupConfig();
 bool restoreConfig();
 bool verifyConfig();
+bool configBackupExists();
 void resetConfig();
 bool deserializeConfig(JsonObject doc, bool fromFS = false);
 bool deserializeConfigFromFS();
@@ -103,6 +104,7 @@ inline bool readObjectFromFile(const String &file, const char* key, JsonDocument
 bool copyFile(const char* src_path, const char* dst_path);
 bool backupFile(const char* filename);
 bool restoreFile(const char* filename);
+bool checkBackupExists(const char* filename);
 bool validateJsonFile(const char* filename);
 void dumpFilesToSerial();
 
diff --git a/wled00/file.cpp b/wled00/file.cpp
index 9f1dd62256..ba406ba3b5 100644
--- a/wled00/file.cpp
+++ b/wled00/file.cpp
@@ -557,6 +557,12 @@ bool restoreFile(const char* filename) {
   return false;
 }
 
+bool checkBackupExists(const char* filename) {
+  char backupname[32];
+  snprintf_P(backupname, sizeof(backupname), s_backup_fmt, filename + 1); // skip leading '/' in filename
+  return WLED_FS.exists(backupname);
+}
+
 bool validateJsonFile(const char* filename) {
   if (!WLED_FS.exists(filename)) return false;
   File file = WLED_FS.open(filename, "r");

From 43eb2d6f471fd896462fc5e53a04f821cc885b08 Mon Sep 17 00:00:00 2001
From: Damian Schneider <daedae@gmx.ch>
Date: Sun, 19 Oct 2025 07:10:05 +0200
Subject: [PATCH 2/2] check config backup as welcome page gate

---
 wled00/wled.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wled00/wled.cpp b/wled00/wled.cpp
index 923688106d..cd21d8d84e 100644
--- a/wled00/wled.cpp
+++ b/wled00/wled.cpp
@@ -474,7 +474,7 @@ void WLED::setup()
 
   if (needsCfgSave) serializeConfigToFS(); // usermods required new parameters; need to wait for strip to be initialised #4752
 
-  if (strcmp(multiWiFi[0].clientSSID, DEFAULT_CLIENT_SSID) == 0)
+  if (strcmp(multiWiFi[0].clientSSID, DEFAULT_CLIENT_SSID) == 0 && !configBackupExists())
     showWelcomePage = true;
   WiFi.persistent(false);
   WiFi.onEvent(WiFiEvent);