No update possible for RS250A

I have a RS 250 A and if I am right, there was an update 5.7.
I still have no popup for this update.
I live in the Netherlands near Amsterdam.
Am I doing something wrong?

@Willem280

Please check a few things.

  1. RS250a–>Settings–>System info–>System version info
    Please tell me your system version information.

  2. If your RS250a version is 4.19 (Official), please update by pressing the UPDATE button on the right.

  3. If your RS250a version is 5.6 (Early access), scroll down and press the roll back button on the right of “Use the office update version” to update.