1 files changed, 21 insertions, 0 deletions

diff --git a/tools/idevicebackup.c b/tools/idevicebackup.c
index 195f837..393b714 100644
--- a/tools/idevicebackup.c
+++ b/tools/idevicebackup.c
@@ -793,6 +793,27 @@ int main(int argc, char *argv[])
                 return -1;
         }
 
+        node = NULL;
+        lockdownd_get_value(client, NULL, "ProductVersion", &node);
+        if (node) {
+                char* str = NULL;
+                if (plist_get_node_type(node) == PLIST_STRING) {
+                        plist_get_string_val(node, &str);
+                }
+                plist_free(node);
+                node = NULL;
+                if (str) {
+                        int maj = strtol(str, NULL, 10);
+                        free(str);
+                        if (maj > 3) {
+                                printf("ERROR: This tool is only compatible with iOS 3 or below. For newer iOS versions please use the idevicebackup2 tool.\n");
+                                lockdownd_client_free(client);
+                                idevice_free(device);
+                                return -1;
+                        }
+                }
+        }
+
         /* start notification_proxy */
         np_client_t np = NULL;
         ldret = lockdownd_start_service(client, NP_SERVICE_NAME, &service);