How is it stuck? Are you trying to get to the embedded portal or to the provider portal? You can try flashing factory image, I'll publish here how to do it but it's on your own responsibility ;)
1. Find a pendrive with
2. Download file
3. Create directory
4. Download file
5.
6. Connect pendrive to the rear USB socket (it has to be rear one!)
7. Plug in MAG 250 to the electricity supply and enter the bootloader menu by holding the MENU button on RC as soon as you've plugged STB in. Do it until you will see the blue screen with some text.
8. Select
9. Enter
10. Wait for updating finish. STB will be rebooted and you will see the embedded portal.
If you are connected to the external portal,
