Zitat:I just did some important translation :

1. Install the Windows Insider app on your phone (you will need to have a store account configured)
2. Open Internet Explorer on your phone and navigate to upwp10.chinacloudapp.cn:7777, then a file will be asked for download, accept and run the file to install it. (Why install the file?because the file will change a win8 registry key and set device value to Lumia 636 Hongkong Version , cheating on Microsoft in order to get Win10 technical preview notification)
3. Edit the settings for your phone WiFi connection to turn on the Proxy and set it to use upwp10.chinacloudapp.cn as IP address and enter 7777 for the port
4. Run the Windows Insider app and tap get preview builds
5. You will see Enroll page with two option: Insider Slow and Insider Fast, Do NOT join any one of them now,(See the picture below,your Enroll page might be in English)

6. Return to your WIFI setting and turn off Proxy
7. Go back to windows insider by using Back button of your Winphone, and it is the last time for you to make decision whether or not update Win10.

Make sure your phone has at least 300M system free space. Good luck!

Zitat:1 DO NOT try it if you DO NOT have a Nokia phone, some people said win10 works on HTC8X, 8XT though (Nokia Apps can even be installed after win10 update on these HTC devices!!!).
Because if something unexpected happen, Microsoft recovery tools may not work for your phone.

2 Make sure your phone is at the latest 8.1 version, or not earlier than 8.10.xxxxx.341.

3 Lowest c: space of successful case is about 275 MB.

4 When windows insider alerts "error", try to reinstall the file of upwp10.chinacloudapp.cn:7777

5 C: space is different even for the same device, all depend on carriers and original device region. Win 10 works on some of Lumia 520, but will not work for the others.

6 Successful case: Lumia 920 Hongkong version and at&t version, Lumia 920T; Lumia 638, Lumia 925 Mainland China version, Lumia 820, Lumia 1520, Lumia 822, Lumia 928, Lumia 620, Lumia 930, Lumia 830, Lumia 1320, Lumia 1020 At&t version, Lumia 625H,Lumia 638, Lumia 920

7 If error c00cee3a/ 80190194 shows up, check and turn off proxy and try again.

8 Failed case: Samsung i8750 , Samsung ativ s, Lumia 530..

Zitat:This is only confirmed working for the AT&T Lumia 1520 and may work as is for other phones but also might require tweaks to the XML (see below). It is very possible to brick your phone with this. Your mileage may vary!

From a high level this works by using FiddlerCore to intercept the traffic going to the Microsoft WPflights server that controls the Insider app and responds with our own custom data. The app accepts registry editing information from the web responses and acts upon that. This allows us to write stuff to select locations in the registry. In the case of the Windows 10 Preview, it appears to only look for your phone's PhoneManufacturerModelName to decide if it should be offered previews. Windows Update also checks this value. Other devices like Samsungs or HTCs may need different settings. My phone did revert to it's factory values after Windows 10 was installed (I actually think it might have done it after Windows 8.1 was installed but it continued with 10 nonetheless).

1. For the Lumia 1520 (and other phones?) reset your phone using the Windows Phone recovery tool. I recommend not logging in and setting everything up yet and just waiting til the end and doing a reset and letting it restore after you’re on Windows 10. This may not be required for your device but most likely is due to the space issue cited by Microsoft. You can see your available space in the About menu of the Windows Insiders app. Before resetting mine was ~200mb and after it was ~600mb. You can try without resetting but may get an error after it tries to download and install the update.
2. Install the Windows Insider app on your phone (you will need to have a store account configured)
3. Open the insiders app and go to the about options in the app bar and screenshot/make notes/email the settings to yourself. You may need this later.
4. Download and extract the WPInsidersHacks app (attached to this post) to your computer
5. Start the WPInsiderHacks app on pc, approve any firewall requests
6. Connect to the same WiFi that your PC is on. Edit the settings for the WiFi connection to turn on the Proxy and set it to use the PC’s IP address and enter 8877 for the port
7. Open Internet Explorer on your phone and navigate to http://[pc.ip.add.ress]:8877 where [pc.ip.add.ress] is the IP address of the PC running the WPInsidersHacks app
8. Tap on the link at the bottom to the fiddler root certificate
9. When prompted click open and then install to trust the cert and ok at the confirmation
10. Run the Windows Insider app and tap get preview builds
11. Tap on which custom action you’d like to perform. In my case I hit "Set to ATT Lumia 635" and click the arrow at the bottom
12. Accept the agreement and click the check mark at the bottom. the app will close
13. Now clear your proxy settings and run the insider app again
14. Tap get preview builds and login with your Microsoft account
15. Select the fast branch (if you’re reading this of course you want the fast branch) and click the arrow at the bottom
16. Go into the phone settings and check for updates. With any luck you should have Windows 10 there for you to install. On my AT&T 1520 it had to do 8.1 first but it kept going to 10 after 8.1 installed (had to check for updates again)
17. You’ll probably want to go into the settings and do another reset and then log into the phone and let it restore your previous data

The Windows Insider options are populated from the WPFlights.xml file. Feel free to edit/add stuff. I've experimented with writing to other keys but had mixed results. I wasn't able to write to the Software\Microsoft\Settings\{1DEF9B7D-2322-40eb-A007-16A75D5CDA6F} for example (seemed to not like the curly braces?). It should have all the same permissons as the preview for developers app. You'll just need to run the WPInsiderHacks app on your PC and point your phone's proxy settings to it if you want to go back and set something again (such as enabling tethering).

Zitat:1. Install the Windows Insider app on your phone (you will need to have a store account configured)
2. Open Internet Explorer on your phone and navigate to upwp10.chinacloudapp.cn:7777, then a file will be asked for download, accept and run the file to install it. (Why install the file?because the file will change a win8 registry key and set device value to Lumia636 Hongkong Version , cheating on Microsoft in order to get Win10 technical preview notification)
3. Edit the settings for your phone WiFi connection to turn on the Proxy and set it to use upwp10.chinacloudapp.cn as IP address and enter 7777 for the port
4. Run the Windows Insider app and tap get preview builds
5. You will see Enroll page with two option: Insider Slow and Insider Fast, Do NOT join any one of them now,(See the picture below,your Enroll page might be in English)

6. Return to your WIFI setting and turn off Proxy
7. Go back to windows insider by using Back button of your Winphone, and it is the last time for you to make decision whether or not update Win10.