Your reply makes zero sense on multiple levels.
The apk signing key never changed, it isn't possible two have more than one version of an application with the same package name and signing key on Android.
Additionally, there is literally no option available to the original poster other than using a build compiled for the hosts native resolution. Nothing else will function. So, yes, while this is important to note the way you presented it makes it seem as though he or she actually has another option, and they don't. It isn't recommended, it is absolutely required.
And I guess it is kinda nit-picky but the original poster pretty clearly used past tense anyway.
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