Only try to load wallpaper for iOS 4.0+

src/device.c

@@ -47,7 +47,7 @@ void device_init()
     device_domain = g_quark_from_string("libimobiledevice");
 }
 
-sbservices_client_t device_sbs_new(const char *uuid, GError **error)
+sbservices_client_t device_sbs_new(const char *uuid, uint32_t *osversion, GError **error)
 {
     sbservices_client_t sbc = NULL;
     idevice_t phone = NULL;
@@ -70,6 +70,23 @@ sbservices_client_t device_sbs_new(const char *uuid, GError **error)
         goto leave_cleanup;
     }
 
+    plist_t version = NULL;
+    if (osversion && lockdownd_get_value(client, NULL, "ProductVersion", &version) == LOCKDOWN_E_SUCCESS) {
+        if (plist_get_node_type(version) == PLIST_STRING) {
+            char *version_string = NULL;
+            plist_get_string_val(version, &version_string);
+            if (version_string) {
+                /* parse version */
+                int maj = 0;
+                int min = 0;
+                int rev = 0;
+                sscanf(version_string, "%d.%d.%d", &maj, &min, &rev);
+                free(version_string);
+                *osversion = ((maj & 0xFF) << 24) + ((min & 0xFF) << 16) + ((rev & 0xFF) << 8);
+            }
+        }
+    }
+
     if ((lockdownd_start_service(client, "com.apple.springboardservices", &port) != LOCKDOWN_E_SUCCESS) || !port) {
         if (error)
             *error = g_error_new(device_domain, EIO, _("Could not start com.apple.springboardservices service! Remind that this feature is only supported in OS 3.1 and later!"));

src/device.h

@@ -37,7 +37,7 @@ struct device_info_int {
 typedef struct device_info_int *device_info_t;
 
 void device_init();
-sbservices_client_t device_sbs_new(const char *uuid, GError **error);
+sbservices_client_t device_sbs_new(const char *uuid, uint32_t *osversion, GError **error);
 void device_sbs_free(sbservices_client_t sbc);
 gboolean device_sbs_get_iconstate(sbservices_client_t sbc, plist_t *iconstate, GError **error);
 gboolean device_sbs_save_icon(sbservices_client_t sbc, char *display_identifier, char *filename, GError **error);

src/gui.c

@@ -1136,6 +1136,7 @@ static void gui_set_wallpaper(const char *wp)
 static gboolean gui_pages_init_cb(gpointer user_data)
 {
     const char *uuid = (const char*)user_data;
+    uint32_t osversion = 0;
     GError *error = NULL;
     plist_t iconstate = NULL;
 
@@ -1147,7 +1148,7 @@ static gboolean gui_pages_init_cb(gpointer user_data)
 
     /* connect to sbservices */
     if (!sbc)
-        sbc = device_sbs_new(uuid, &error);
+        sbc = device_sbs_new(uuid, &osversion, &error);
 
     if (error) {
         g_printerr("%s", error->message);
@@ -1156,9 +1157,11 @@ static gboolean gui_pages_init_cb(gpointer user_data)
     }
 
     if (sbc) {
-        /* Load wallpaper if available */
-        if (device_sbs_save_wallpaper(sbc, "/tmp/wallpaper.png", &error)) {
-            gui_set_wallpaper("/tmp/wallpaper.png");
+        if (osversion >= 0x04000000) {
+            /* Load wallpaper if available */
+            if (device_sbs_save_wallpaper(sbc, "/tmp/wallpaper.png", &error)) {
+                gui_set_wallpaper("/tmp/wallpaper.png");
+            }
         }
 
         /* Load icon data */

src/sbmgr.c

@@ -131,7 +131,7 @@ void sbmgr_save(const char *uuid)
         GError *error = NULL;
         sbservices_client_t sbc;
 
-        sbc = device_sbs_new(uuid, &error);
+        sbc = device_sbs_new(uuid, NULL, &error);
 
         if (error) {
             g_printerr("%s", error->message);