Update for app from WP 7.1 to WP 8.1

Question

Is it possible to publish an update for an old WP 7.1 Silverlight app to be updated to new WP Store 8.1 app?

If it is, 1) will isolated storage files remain after the update and 2) how would I test such scenario?

Answer 1

Hello Milan,

It is recommended that you add a separate package to target Windows Phone 8. For further testing prior to submission, you can use the Windows Phone 8 emulator to ensure it is working properly.

App platform compatibility for Windows Phone 8

App Submission Tips

Guidance for app package management

Windows Phone 8 Emulator

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- Bobby H - MSFT
Windows and Windows Phone Dev Center Support

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Answer 2

Hi

1-Yes its possible you can easily re-target your windows phone 7.1 app to windows 8/8.1 by creating new packages for windows phone 8/8.1 apps

2- In order to test  create separate new package for windows 8/8.1 app and run on emulator and device which supports windows 8/8.1 apps 

Mark this Answer if it helps you

Thanks

Answer 3

Thanks for the replays.

I am aware that I can use emulator or a device for testing :) What I intended to ask is, how to test upgrade process, or how to deploy new application package over existing one without releasing a full update on the store.

Is it possible to release an update as beta?

A note: Upgraded application is in new solution created "from scratch".

Answer 4

Hi Milan

there is no need to create app from scratch you can retarget your existing wp7 app to wp8 app.

when you retarget you existing windows 7 app to windows 8 app ,you have to change or add some existing libraries.