Issues with opening an APK file , and others

Hi.

About 2 years ago i programmed a simple program for industrial use. But now, i need to translate it.

I was given my old .apk file , and i just want to open it, but the app builder doesn't allow me to do so.
Can somebody help ?

Furthermore, if i remember well, i ran into problems during developpement because app inventor updated its bluetooth firmware and i had to reinstall the extention. How do i avoid that ?

It is supposed to work with a machine but i don't have it on hand , meaning that i won't be able to test the final app ( one of the reason i simply want to open my .apk file)

Unfortunately you need your old aia file not apk in order to upload it to creator and work with it. Do you have a backup of your old project ?

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