The complete guide to transferring Angry Birds high scores on Windows Phone 8.1 and Windows 10 Mobile (plus, other games)

A complement to this guide:

http://www.angrybirdsnest.com/angry-birds-ultimate-backup-tutorial-for-all-platforms/

Usual disclaimer: You follow this guide at your own risk and I accept no responsibility for damage you may do to your phone because it.  That said, the procedure for WP 8.1 requires no permanent change to your phone and should be far less risky than the procedure for Win 10 (which requires what some call jailbreaking the phone).  Thus, if at all possible, you should transfer scores from an 8.1 phone to an 8.1 phone and then upgrade the OS to Win 10.  Even, revert a phone from 10 to 8.1, if possible, before beginning this operation.

I have no procedure for Windows Phone 8.0 and earlier.  Some of the precursor tools to what are used in the Windows 10 Mobile procedure may be of help if you really need to go down that road.


Windows Phone 8.1

(Scroll halfway down this page for Windows 10 Mobile [⚡️] instructions.)

NOTE: You must “developer unlock” your phone to install the tools needed to gain access to the encrypted part of the SD card (D:\WPSystem) where the files of interest are stored.  Developer unlocking is a standard, Microsoft-built procedure.  This is a bit laborious but possibly not as bad as what one must do to an Android 😉.

This procedure is based on this post: https://superuser.com/a/981603/142943

1. Move games to SD card

On phone, move all your Angry Birds games to an SD card (requires WP 8.1+):

Settings >> Storage Sense >> phone >> apps+games >> Angry Birds… >> tap and hold >> move to SD

2. Developer unlock phone

With a Microsoft account (formerly Live ID and all sorts of names) you can unlock 1 phone at a time (per account 😁).

With a Windows Dev Center account (formerly all sorts of other names) you can unlock 3 phones at a time and manage abandoned phones through the Dev Center Dashboard. Dev accounts currently cost $19, more or less, depending on country. (I have a free dev account through Visual Studio Community edition, but this does not count. The paid account is required.)

Download and install Windows Phone 8.1 SDK:

https://developer.microsoft.com/en-us/windows/downloads/windows-8-1-sdk

Or, for developers, download the SDK with the Visual Studio installer (2013, 2015, and maybe 2012, but not 2017 and later)… but that’s a much harder route because VS is a long and fat install… and registering with Windows Dev Center (or is it MSDN? or My Visual Studio? anyhow, free registration, not $19) is required to find and download older Visual Studios if you don’t already have them.

Next:

  1. Run Windows Phone Developer Registration 8.1 (from WP SDK 8.1)
  2. If unable to connect to phone:
    • Check if “Windows Phone IP over USB Transport (IpOverUsbSvc)” service is running:
      • Windows key >> type “Services” >> look for service and start it
    • If connecting to a phone without a SIM card:
      • Connect phone to wifi and set correct date and time manually (weird eh?)
  3. After phone connects, select Register button
  4. Log in with your MS account
  5. Phone should now be dev unlocked

This tool is a bit buggy and tends to lose connection after registering/unregistering, so quit and restart the tool if you want to check latest status.

Note: Run tool again to “Unregister” (lock) the phone, if you want, after all work is done. Otherwise, phone must remain “Registered” to run side-loaded apps (which would only be Pocket File Manager 4.3.6.0 or WPSystem_Folder_Unlocker in this case).

3. Gain access to WPSystem folder on SD card

There are two tools to choose from that can modify the WPSystem folder attributes:

  • Easiest: WPSystem_Folder_Unlocker
  • More transparent: Pocket File Manager 4.3.6.0

3.A. WPSystem_Folder_Unlocker

Note: This tool has no feature to reset the folder attributes (not that it appears to matter) but your phone will do that on reboot, and possibly at other times.

Download the XAP install file:

https://forum.xda-developers.com/windows-phone-8/development/access-wpsystem-folder-t2853795

See “Attached Files” on top post:

WPSystem_Folder_Unlocker_Release_ARM.xap – (73.3 KB)

Desktop:

  1. Run Windows Phone Application Deployment 8.1 (from WP SDK 8.1) and set:
    • Target: Device
    • App: WPSystem_Folder_Unlocker_Release_ARM.xap
  2. Click Deploy button; takes a minute

Phone:

  1. Open WPSystem_Folder_Unlocker
  2. Check that Path is correct: D:\WPSystem\
  3. Tap the Unlock WPSystem Folder (sd card) button
  4. Tap the ok button on the success message box
  5. Repeat these steps if settings are lost such as on phone reboot

3.B. Pocket File Manager 4.3.6.0

Download the XAP install file:

http://windowsphone-9.blogspot.com/2014/08/how-to-make-free-license-applications.html

Note: the link to the XAP file is near the bottom of the post.

Also note that the version of Pocket File Manager currently in the MS Store doesn’t have the features to modify the WPSystem folder attributes like we need.

Desktop:

  1. Run Windows Phone Application Deployment 8.1 (from WP SDK 8.1) and set:
    • Target: Device
    • App: PocketFileManager4360.xap
  2. Click Deploy button; takes a minute

Phone:

  1. Open Pocket File Manager
  2. Tap the SD Card folder
  3. Touch and hold the WPSystem folder
  4. On popup menu, scroll and tap the Information button
  5. Uncheck the two checked boxes:
    • [_] Hidden
    • [_] System
  6. Tap the Save button
  7. Repeat these steps if settings are lost such as on phone reboot

4. Copy files from WPSystem to a non-system folder

Install another file manager to phone.  Pocket File Manager will un-hide WPSystem but not otherwise manage files under it.  So, search the MS Store for your favorite file manager.  Some I tried:

  • Aerize Explorer (slightly buggy but works well enough)
    \WPSystem\Apps\{56DD9C3D-FE0A-4CEB-84B0-043E58E55B19}\Install
  • Super File Manager (very buggy but works)
  • Metro File Manager (nice but won’t read WPSystem folders)
  • Files (by Microsoft, won’t read WPSystem folders)

Add a new folder to the SD Card to hold the game data, such as:

  • wpdata

Add new folders in \wpdata\ for each game, such as:

  • 2E3
  • 4D1
  • 7F4
  • 08C
  • 28F
  • 502
  • 916
  • E94
  • (Names taken from first 3 characters of game IDs in WPSystem\AppData to help keep things in order.  REALLY!  It helps!)

Copy the Local folder from D:\WpSystem\AppData\{….}\Local to D:\wpdata\…\Local

  • Might as well copy all of Local and work out the specific files to restore later.
  • In Aerize Explorer, for example, press and hold a folder to find Copy option.
  • Don’t mix up copy and paste and other commands like I tend to do!  The UI in Aerize Explorer is not the best for keeping these things straight.  You’ve been warned.
  • ⚠️ Keep notes to keep track of where you are and, if you are the type to get lost or fumble commands easily, quit this guide now!  Mistakes from pasting into WPSystem cannot necessarily be undone.  You’ve been warned again.

Optional: Copy the Install folders as well from D:\WPSystem\Apps\{….}\Install to D:\wpdata\…\Install in case the game disappears from the app store (like Angry Birds Stella has). This can take several minutes per folder (see the next note on patience).

DO NOT INTERRUPT COPYING IN Aerize Explorer!  Wait for the busy dots at the top of the screen to stop.  Otherwise, other actions will likely bomb the copy.  My Lumia 521 with a Class 10 SD card was moving only about 20MB a minute (and varied in the 10-100MB/min range).

Miscellaneous info about games and files to backup

To discover which folder is which, examine files in:

D:\WPSystem\Apps\{….}\Install

Order of Angry Birds games in most file managers, their AppData folder name, and the files needed to transfer the high scores:

  1. Angry Birds [Space]
    • D:\WPSystem\AppData\{2E36DF2B-44BE-405D-873A-79FA190C9B35}\Local
      • eaglepurchases.lua
      • episodepurchases.lua
      • gamepurchases.lua
      • highscores.lua
      • settings.lua
  2. Angry Birds Stella   (Purple.exe)
    • D:\WPSystem\AppData\{4D1A2F37-39E0-4E64-812E-478C92D6C87D}\Local
      • highscores.lua
      • settings.lua
  3. Angry Birds [Star Wars]
    • D:\WPSystem\AppData\{7F48EACF-1239-4877-88A4-ABE9D3DDFAD7}\Local
      • eaglepurchases.lua
      • episodepurchases.lua
      • gamepurchases.lua
      • highscores.lua
      • settings.lua
  4. Angry Birds [Seasons]
    • D:\WPSystem\AppData\{08C71378-2CC5-48CE-9995-13206CEF8E2F}\Local
      • highscores.lua
      • settings.lua
    • Did not start in the correct episode page after transfer but whatever.
  5. Angry Birds Epic
    • D:\WPSystem\AppData\{28FCFF8A-B545-487B-AE36-7DA1521998DF}\Local (46MB!)
      • UnityPlayer.log
      • UnityPlayer.upp
      • assets_service\
        • Guessing that you can avoid redownloading the audio if you copy this folder.  Not tested.
  6. Angry Birds [Star Wars II]
    • D:\WPSystem\AppData\{5026B325-F461-4A4A-9FF9-4A5DE698D58A}\Local
      • eaglepurchases.lua
      • episodepurchases.lua
      • gamepurchases.lua
      • highscores.lua
      • settings.lua
    • Got an xbox.com error on first run after transfer but otherwise fine.
  7. Angry Birds
    • D:\WPSystem\AppData\{9168C4F3-217B-4A29-B543-7513BB4AE2ED}\Local
      • highscores.lua
      • settings.lua
  8. Angry Birds [Rio]
    • D:\WPSystem\AppData\{E94059A2-135C-420E-8E60-BCDA5FC3EC30}\Local
      • highscores.lua
      • settings.lua
  • Pocket Rally
    • D:\WPSystem\AppData\{B74A4BD9-E57A-4317-948C-697911FA7A34}\Local
      • Replay.dat   (copied it but doubt it’s needed)
      • UnityPlayer.log
      • UnityPlayer.upp

5. Relock the old phone

Optional: Undo the attribute settings to D:\WPSystem you did with Pocket File Manager 4.3.6.0 (they reset themselves on boot, etc., so no worries usually).

You MUST re-lock the phone if you don’t have a dev account and can unlock only one phone at a time.  Chances are, however, you want to re-lock the old phone regardless.

See unlock instructions above for lock instructions.

6. Optional deep backup

Remove the SD card from the phone and plug it into a desktop computer.

On Windows:

  • Windows Explorer >> View >> Options >> Change folder and search options ?> Folder Options >> View >> Advanced settings:
    • Select:
      • Hidden files and folders
        • (o) Show hidden files, folders, and drives
    • Uncheck:
      • [_] Hide protected operating system files (Recommended)

Copy S:\WPSystem and the unencrypted files you just copied (S:\wpdata) to a backup location on your desktop drive.

Optional: Rename S:\WPSystem (to something like WPSystemOldLumia521) on the SD card to preserve this folder from being destroyed by the new phone (new phones destroy and rebuild this folder because they can’t decrypt it).  This is really just up to you, your paranoia, and how much space you have on the card.  I found it useful to preserve it this way and then, by swapping the WPSystem names around later, I was able to re-plug the card into the old phone and backup even more apps.

7. Restore game data to new phone

Either:

  • Install same the SD card into your new 8.1 phone, or
  • Copy \wpdata to a new SD card for your new 8.1 phone.

⚡️ If moving to a Windows 10 Mobile phone, do one of the above regarding your SD card, and then jump to the Windows 10 Mobile part of the guide below. ⚡️

Insert the SD card into your new phone and reinstall all the games to the SD card.  You shouldn’t need to run the new game installs yet but it doesn’t matter if you do.

Note: As noted above (under Optional deep backup), installing new apps to an SD card from another phone will remove any software installed there from that other phone (presumably, it needs to wipe out WPSystem and start anew with its own encryption).

Repeat the earlier steps for:

  • Developer unlocking the new phone,
  • Gaining access to WPSystem folder on SD card, and
  • Installing another file manager.

Using your file manager, in D:\WPSystem\AppData\{….}\Local, rename the above-listed *.lua and other files (if any yet) to make room for the files you will copy in (unless you prefer to live a little dangerously and just want to replace the files upon copy).

Copy the above-listed *.lua and other files from D:\wpdata\…\Local into their respective places in D:\WPSystem\AppData\{….}\Local.

8. fin

Test.  You should be good to go.  If not, cry a little bit 😪, then look for where you (or I) went wrong.

Optional: Undo the attribute settings to D:\WPSystem you might have done with Pocket File Manager 4.3.6.0 on the new phone.

Note: It is strongly recommended to re-lock the new phone before upgrading to Windows 10 Mobile because Win 10 provides a completely different type of developer access that is reported to conflict somewhat with the old way.

Optional: Back on your Windows desktop, re-hide OS files and hidden files.


Windows 10 Mobile  [⚡️]

NOTE: You must “interop unlock” your phone to install the tools needed to gain access to the encrypted part of the phone (D:\WPSystem\AppData and U:\Users\DefApps\AppData) where the files of interest are stored.  Interop unlocking is also called “jailbreaking” on Windows Phones but I don’t know if that equates to the dangers of other types of jailbreaking on these and other devices.  You must decide this for yourself.  It sounds like the changes done here can be undone by hard resetting the phone, but I haven’t tested that theory myself.

Side note: Some early or preview versions of Windows 10 Mobile may allow various other tricks to gain access to the system file areas without interop unlocking, such as tricks detailed here, but all of my attempts to otherwise gain access through the latest OS on my Lumia 830 have been unsuccessful.

Onward:

  • If moving scores from Windows Phone 8.1 to Windows 10 Mobile, refer to the 8.1 part of the guide, to back up your scores, before returning here.
  • If moving scores from one Windows 10 Mobile device to another Windows 10 Mobile device, this should cover you too.
  • Unlike Windows Phone 8.1, the Windows 10 Mobile solution presented here does not require the games to be moved to the SD card for backup and restore of high scores.

[⚡️]  1. Developer unlock phone

On Windows 10, anyone can developer unlock their device (may not be in the same place on all devices and versions):

Settings >> Update & security >> For developers >> select Developer mode

Optional: While you are here, turn on these as well (you need them for the next step if using Windows Device Portal to install apps):

  • Device discovery: On
  • Device Portal: On

[⚡️]  2. Interop unlock phone

Follow the Interop Tools guide closely for installation instructions:

https://forum.xda-developers.com/windows-10-mobile/windows-10-mobile-apps-and-games/app-interop-tools-versatile-registry-t3445271

Download the version of Interop Tools that works best for your phone:

Unfortunately, at the time of this writing, there is much confusion about what version of Interop Tools to use on which models, OSs, and/or carrier firmwares.  The author believes the latest version works with all phones but user experience proves otherwise.  Thus, this is the best advice I can give at the moment:

  • If using an old Windows 10 version (build 10.0.10586.xxx) you must use this old Interop Tools version:
  • Otherwise, start with this version, as it appears to have the broadest compatibility (and has the simplest UI):
  • For Lumias later than x35 or so (just an educated guess), the latest version may also work:
    • InteropTools_L_2.0.54.0_Test
      • Dependency files included in the main download.
      • Ignore the InteropTools.Providers.Registry.*.zip files attached to that post, you don’t need them.

Additional install notes

Remember, install the ARM dependency appx files first.

You don’t have to use Windows Device Portal to install Interop Tools.  You can also install appx and appxbundle files by downloading or copying them to the phone and tapping on them in File Explorer.

Windows Device Portal for Mobile instructions:

https://docs.microsoft.com/en-us/windows/uwp/debug-test-perf/device-portal-mobile

or

  1. Enable Device discovery and Device Portal on phone
    • Device discovery and Device Portal on desktop need not be on
  2. Check Connect using: Wi-Fi address
  3. Go to browser on desktop and enter that address
  4. Click Pair under Device discovery on phone to get 6-char code for the browser
  5. Click Go (or whatever the button is) to make the connection
  6. Device discovery and Device Portal on desktop need not be on

or (depending on your luck)

  1. Enable Device discovery and Device Portal on phone
    • Device discovery and Device Portal on desktop need not be on
  2. Connect phone and desktop via USB cable
  3. USB connections are supposed to work at http://127.0.0.1:10080 (which redirects to https://127.0.0.1:10443)
    • This didn’t work for me at first couple tries but now works reliably

Running Interop Tools

Due to the different versions of Interop Tools at play here, it’s hard to give step-by-step instructions so, instead, here are the points you need to know:

  • After slogging through whatever opening screens, including a re-authentication into your phone (for some reason), you need to choose a “provider” to connect to the innards of your phone.  Choose the “THIS DEVICE” provider that “connects to this device natively” (or whatever sounds most similar to that).  It may be the first choice, it may be the second.  Be patient.  It can take a few seconds to connect.
  • Open the hamburger menu and find the Unlock and/or Interop Unlock item and select it.
  • (NOTE: I’m not entirely sure this step is required — the Interop Tools author fuzzily contradicts himself whether or not this step is required for the other steps — this is just the route I took based on other guides I found and from circumstance due to trouble with the latest version of Interop Tools; I don’t have means to go back and try another route at this time.)  The Interop Unlock screen contains four toggles.  Start with the last one: Restore NDTKSvc.  Toggle it to On (or, attempt to toggle it to On).  Wait up to 15 seconds to give the phone a chance to do what it needs to do to respond–the UI may respond that the toggle worked, it may not.  Reboot the phone and return here.  Restore NDTKSvc should now be stuck to On (you cannot turn it Off, what’s done is done).  If it is not on, check the Interop Tools instructions for your phone again, and try again.
  • After Restore NDTKSvc is on/restored (or not, see above note), turn on Interop/Cap Unlock.  (If it does not stay on, you may need to try another version of Interop Tools.)  Also, turn on New Capability Engine Unlock (I believe… again, this is the route I took).  It does not appear that Full Filesystem Access is needed for what we’re doing.  Some of these don’t stay on after reboot–that is fine–but don’t reboot yet either.

[⚡️]  3. Backup game data to SD card

Download and sideload Apps Data Manager to your phone (it installs just like Interop Tools does):

https://forum.xda-developers.com/windows-10-mobile/windows-10-mobile-apps-and-games/app-apps-data-manager-windows-10-mobile-t3523048

If you get the following error from Device Portal, or it blindly doesn’t install from your phone’s File Explorer, you need to check your Interop Unlock settings.

Failure reason: Failed to start deployment. Failure text: Package could not be registered. (0x80073cf6)

Note: There is a similar (and earlier) tool with a similar name, App Data Manage Tool, but I’m not covering that one because it is unclear where it backs up the data to (and is not worth figuring out).

Phone:

  1. Start Apps Data Manager
  2. In Settings, set Backup Folder to a location on your SD card.  I set it to the same folder I used with my Windows Phone 8.1 manual backups (the subfolders don’t collide):
    • D:\wpdata
  3. In the Apps List (wait for it to cache a list of your installed apps):
    1. Select the game you want to backup
    2. Select the ⤒ Backup Data button in the toolbar
    3. Edit or accept the default name
    4. Select the 🡢 arrow button to start backup
    5. Repeat for each game

[⚡️]  4. Optional deep backup

Remove the SD card from the phone and plug it into a desktop computer.

On Windows:

  • Windows Explorer >> View >> Options >> Change folder and search options ?> Folder Options >> View >> Advanced settings:
    • Select:
      • Hidden files and folders
        • (o) Show hidden files, folders, and drives
    • Uncheck:
      • [_] Hide protected operating system files (Recommended)

Copy any apps installed on the SD card (S:\WPSystem) and the backup files Apps Data Manager just made (S:\wpdata) to a backup location on your desktop drive.

Optional: Rename S:\WPSystem (to something like WPSystemOldLumia830) on the SD card to preserve this folder from being destroyed by the new phone (new phones destroy and rebuild this folder because they can’t decrypt it).  This is really just up to you, your paranoia, and how much space you have on the card.  I found it useful to preserve it this way and then, by swapping the WPSystem names around later, I was able to re-plug the card into the old phone and backup even more apps.

[⚡️]  5. Restore game data to new phone

Either:

  • Install same the SD card into your new Win 10 phone, or
  • Copy \wpdata to a new SD card for your new Win 10 phone.

Insert the SD card into your new phone and reinstall all the games.  It doesn’t matter if you install them to the SD card or not.

Note: As noted above (under Optional deep backup), installing new apps to an SD card from another phone will remove any software installed there from that other phone (presumably, it needs to wipe out WPSystem and start anew with its own encryption).

Either:

  • If transferring high scores from Windows Phone 8.1 to Windows 10 Mobile:
    1. Run each game at least once to generate a set of data files for Apps Data Manager to find and backup.  We need some scratch backup files to work with.
    2. Then, do all of the earlier Windows 10 Mobile steps for:
      1. Developer unlocking the new phone,
      2. Interop unlocking the new phone,
      3. Backing up game data on the new phone (scratch data), and
      4. Optional deep backup.
    3. Connect your new Win 10 phone to a desktop computer via USB for access to the SD card folders
    4. Copy all of your Windows Phone 8.1 backup data (\\\\Removable Storage Devices\Your Lumia XXX\SD card\wpdata) and your  Windows 10 Mobile backup data (also \wpdata in my case) to a work area on your desktop hard drive (for example, C:\stuff\wpdata)
    5. On your desktop, start with the Win 10 backup.  For example, Angry Birds Rio data will be in a folder called “{E94059A2-135C-420E-8E60-BCDA5FC3EC30}”:
      1. In there, you will find a folder for each backup made by Apps Data Manager, such as “Angry Birds – 2017-07-23 16.35.33”
      2. And, in there, you will find AppData.zip and AppInfo.txt
      3. Unzip AppData.zip to a subfolder such as AppData
      4. In \AppData\Local you will find the files of interest
      5. Copy the above-listed (under Windows 8.1/section 4) *.lua and other files from the Win 8.1 backup folders and paste them over the same files in these unzipped folders.  For example:
        • copy the specified files from C:\stuff\wpdata\E94\Local\
        • and paste them over the files in C:\stuff\wpdata\{E94059A2-135C-420E-8E60-BCDA5FC3EC30}\Angry Birds – 2017-07-23 16.35.33\AppData\Local\
      6. Rename your original AppData.zip to AppDataOriginal.zip
      7. Zip up your modified AppData folder into a new AppData.zip in the same folder as the original.  BE SURE TO GET THE FOLDER STRUCTURE IN THE ZIP THE SAME AS THE ORIGINAL!  (Type of compression in the zip does not appear to matter at this time.)
      8. Copy your new AppData.zip over the original one on the phone.  For example:
        • copy C:\stuff\wpdata\{E94059A2-135C-420E-8E60-BCDA5FC3EC30}\Angry Birds – 2017-07-23 16.35.33\AppData.zip
        • to \\\\Removable Storage Devices\Your Lumia XXX\SD card\wpdata\{E94059A2-135C-420E-8E60-BCDA5FC3EC30}\Angry Birds – 2017-07-23 16.35.33\, overwriting the original.  (You already have a backup, remember?)
      9. Repeat for each game
    6. If the connection to your phone over USB hangs in File Explorer (this often happens if left idle for a few minutes) unplug and replug the USB cable
  • Otherwise (Win 10 to Win 10):
    • Repeat the earlier steps for:
      • Developer unlocking the new phone,
      • Interop unlocking the new phone, and
      • Sideloading the Apps Data Manager app to the new phone.

Now, back on your new Win 10 phone, in Apps Data Manager:

  • In Settings, make sure Backup Folder is pointed to the correct folder
  • In the Apps List (wait for it to cache a list of your installed apps):
    1. Select the game you want to restore
    2. Under “Available Backups:” you should see your previous backup(s) listed, select one
    3. Select the Restore item from the popup menu
    4. If a confirmation message box pops up, select the Yes button
    5. Repeat for each game

[⚡️]  6. fin

Test.  You should be good to go.  If not, quietly sob a little while 😪, then look for where you (or I) went wrong.  There are plenty of places to go wrong in all that mumbo jumbo up there.

Most of you will now probably want to take your phone out of developer mode (may not be in the same place on all devices and versions):

Settings >> Update & security >> For developers >> select Windows Store apps

Optional: Back on your Windows desktop, re-hide OS files and hidden files.


Installing an abandoned game

If you have a game installed on your old Windows phone that is no longer in the Microsoft Store (such as Angry Birds Stella) and if it was originally packaged as a XAP file and not the new APPX files, you can sideload it and play it on an 8.1 or 10 phone that has developer mode unlocked.

These instructions assume you backed up the game Install folders as described above under Windows 8.1/section 4 (or, you otherwise have unencrypted access to the D:\WPSystem\Apps\{….}\Install folders via an unencrypted WPSystem folder backup or other connection [such as is possible with Interop Tools]).

Older game Install folders–only games old enough to have come from a XAP file–can be turned back into a XAP install file by zipping it up according to these simple instructions:

  1. Zip up everything under the Install folder except for this one file (also, don’t include the Install folder itself):
    • WMAppPRHeader.xml
  2. Rename the WhateverYouWant.zip to WhateverYouWant.xap

You must developer unlock your phone (see the respective instructions above) to install these homemade XAP files and you must keep it unlocked in order to run the apps [I’m repeating myself].  Note: On a Windows 10 device, developer unlock it using the built-in features of Win 10, and not with the WP 8.1 SDK tools.  Hint: On Win 10, you might pin a link to the “For developers” settings page on your Start menu next to the games that require it.

On both Windows Phone 8.1 and Windows 10 Mobile devices, these XAPs can be installed with the Windows Phone Application Deployment 8.1 app (from the Windows Phone 8.1 SDK):

https://developer.microsoft.com/en-us/windows/downloads/windows-8-1-sdk

Note: On Win 10, sideloaded XAP apps like this cannot be moved to the SD card.

After the game is sideload installed, restore the high scores just like any other game.

phew!… fin

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