Windows 10 Mobile Build 10572 is here for Windows Insiders in Fast Ring and it is again not directly upgradable from the existing preview builds like Build 10549 though Microsoft has promised that next builds (higher than Build 10575) will be. So, what it means is you need to roll-back to Windows Phone 8.1 and then update to Build 10572 in one go.
We’re rolling out Windows 10 Mobile Insider Preview Build 10572 today to Windows Insiders on the Fast ring. As you know, build 10549.4 had a bug that prevented upgrade to it from prior builds, so Insiders who wanted to try it out needed to flash back to 8.1. We have fixed this issue in our latest internal builds, and new builds greater than 10575 will have the fix.
You can refer to our tutorial on using Windows Devices recovery Tool to roll-back to Windows Phone 8.1. Once on Windows Phone 8.1, you have to install Windows Insider app and choose “Insider Fast” again to update to Build 10572.
Windows 10 Mobile Build 10572 Known Issues:
- Visual Voicemail sync is broken on some devices. You may need to call your voicemail directly within the Phone app > Settings > Change more settings for Phone > Call Voicemail.
- Opening message threads within the Messaging app will crash on dual SIM phones if the second line’s Messaging tile is removed from the Start screen (even if only a single SIM is used). The second line’s Messaging app will also appear to be removed from the All apps list. To work around this issue, the second line messaging tile must be linked to the first line messaging tile by opening up the first line in the Messaging app then go to Settings > link tiles.
- On Dual SIM devices, unpinning the second line Phone tile from the Start screen will make the entry disappear from the All apps list. Rebooting the phone will cause the tile and application to both reappear.
- Photos cannot be selected for sharing through third party apps like Facebook, Facebook Messenger, Instagram Beta, WhatsApp etc.
- Some devices will get into a state where the Phone app will continually crash upon launch. Resetting the device will recover it from this state.
- Devices that have updated from Windows Phone 8 to Windows Phone 8.1 may lose the ability to connect to Wi-Fi on Windows 10 Mobile Insider Preview builds or may fail to update to Windows 10 Mobile Insider Preview builds all together. You can use the Windows Device Recovery Tool to first update your device to Windows Phone 8.1 and then upgrade to the latest Windows 10 Mobile Insider Preview build.