I have upgraded the Windows Phone 7 Barcode Scanning app to a Windows 8 Phone app and I deployed the app to my Windows 8 Phone. The package is .xap. How do I sideload this app to another phone? I am using this app for business purposes and it will not be available on the Windows Store.
Zune never connects to my Win8 phone and I am unable to use the Win7 Phone Application Deployment tool.
Like you used the Windows Phone 7 deployment tool for WP7, just use the Windows Phone 8 deployment tool for WP8. It's located in the folder:
C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v8.0\Tools\XAP Deployment
Of course, that is if you have a developer-unlocked device.