diff --git a/UpdatePTUDevCtrl/UpdatePTUDevCtrl.pro b/UpdatePTUDevCtrl/UpdatePTUDevCtrl.pro
index f8a620c..ee3f4dd 100644
--- a/UpdatePTUDevCtrl/UpdatePTUDevCtrl.pro
+++ b/UpdatePTUDevCtrl/UpdatePTUDevCtrl.pro
@@ -152,7 +152,10 @@ DEFINES += QT_DEPRECATED_WARNINGS
 # 1.5.7   : Add support for dynamic portrait / landscape.
 # 1.5.8   : Use EVENT_ID=<pid of update-tool> for CMD_EVENT.
 # 1.5.9   : Removed restart of Apism if ISMAS unreachable.
-VERSION="1.5.9"
+# 1.5.99  : Special version for 281/Szeged: remove all DC-library dependencies, as
+#           DC-firmware in Szeged does not support uploading json-files or uploading
+#           DC-firmware binaries.
+VERSION="1.5.99"
 # PLANNED TODOS:
 #   1:  Das Repository wird repariert bwz. neu geklont. Unabhaengig vom WAIT.
 #   2:  Wenn der WAIT-Button aktiv ist, dann wird ein Repository repariert (neu