Update manager in yelloGUI is turned off per default in order to avoid installation of older firmware versions.

However this can be turned on in order to allow installations to an older version in case of Issues/Bugs in current release version.

in yelloGUI, please to turn on the update manager in order to show the internal update, drop down menu for version selection update from disk as shown below :

After the parameter update, you can go ahead with your updates as follows.