Okay,
This is obviously without any guarantee that it works or that it doesn't brick your phone.
Just follow the instructions, and remember to replace the model variant with a win10 supported phone from your carrier®ion. Don't forget to thank the developer of the tool, it extremely simplifies the process!
Link: HOWTO: Install Windows 10 for Phones on Non-?€? - Pg. 2 | Windows Phone 8 Development and Hacking | XDA Forums
edit: on page 2 there, you can find working model variants.
For the german people with an unlocked phone, RM-984_1002 is going to work. German O2: RM-984_1012
This is obviously without any guarantee that it works or that it doesn't brick your phone.
Just follow the instructions, and remember to replace the model variant with a win10 supported phone from your carrier®ion. Don't forget to thank the developer of the tool, it extremely simplifies the process!
Link: HOWTO: Install Windows 10 for Phones on Non-?€? - Pg. 2 | Windows Phone 8 Development and Hacking | XDA Forums
edit: on page 2 there, you can find working model variants.
For the german people with an unlocked phone, RM-984_1002 is going to work. German O2: RM-984_1012