I don’t understand your post completly…
but if you are building your apk with Phonegap, it’ll put the apk on their phonegap server (build.phonegap.com) and you’ll see a link to download the apk and there’s also a QR code that points to this link so that you don’t need to enter the full path name in your phone. If you upload your code to phonegap again, it’ll update the apk so that the link keeps the same (the link contains the phonegap id that is defined in the project properties) so that if you’re downloading it again, you’ll get the updated apk. I am not 100% sure, but the link might change(?) or they might delete your apk. Anyway, I think it’s always not a good idea to publish an app by pointing to the Phonegap server. Better you download the apk and upload it with filezilla or whatever ftp client to your own website.
You might know all that, but I just want to make sure you know that before giving some hints:
- Does the QR code point to the same file as the link? (I think so!)
- If not, does another QR code app points to another file?
- If you are updating an app that was last updated in 2015 the download link might be still the same as back in 2015. It’s just a new apk on the old location. But if you download and install it and it’s still the old version, than you might clean your cache on your phone or download the apk with another browser to get the new version of the app.