The XAP is the official, signed, or developer-unlocked version, not a broken re-pack.
The XDA community is the heart of Windows Phone preservation. Their forums contain threads with direct links to "Unlocked" or "Unlocked XAPs" that bypass licensing issues, making them the highest quality for restoring functionality. Types of Content in High-Quality Archives
The Internet Archive holds massive, multi-gigabyte torrents and direct-download collections of Windows Phone apps. Look for sets titled "Windows Phone 8.1 XAP Archive" or "Lumia Apps Collection." These are highly reliable, safe, and completely free. windows phone xap archive extra quality
If you want, I can:
Making old Lumias usable for basic tasks. The XAP is the official, signed, or developer-unlocked
A typical XAP file contains the following components:
Legacy tools like ChevronWP7 or custom ROMs (like RainbowMod for the Nokia Lumia 800) are used to achieve developer-unlocked status. Step 2: Sideloading the XAP Types of Content in High-Quality Archives The Internet
These often contain only a "stub" or partial data designed to trigger a Store installation; they cannot be sideloaded on modern devices without an active Store.
: I've been using this specific XAP archive to get access to some legacy apps on my old Windows Phone, and I'm pleasantly surprised. The archive includes a variety of apps not available through official channels anymore, and they work remarkably well. The 'extra quality' tag seems justified by the smooth performance and the inclusion of tweaked apps that aren't typically found elsewhere.
If you are building an "Extra Quality" archive, skip the clutter. Focus on these: