Need help with updating an apk - Android Q&A, Help & Troubleshooting

Hey all,
There's an app I need help updating to either api 24/26 . The app which is meant to interface with the Joyetech Ocular/Ocular C, which is on Google Play,
https://play.google.com/store/apps/details?id=com.zijing.joyetech
The problem is, the devs of the app hasn't updated it since api 22, and after sending emails to the devs on multiple channels, there's no response.
Looking at the logcat of an app's activity, the Android app derives keys using the SHA1PRNG algorithm from the Crypto provider, and as of Android N, apps must start using a real key derivation function.
My issue is that:
1: I'm very mediocre at things like this. (Decompile, import into Eclipse, edit as needed, then recompile.)
2: My laptop doesn't have enough space to install Eclipse.
Would anyone with more knowledge on this subject be willing to update this apk for me?

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I launched the app through yatse:// as defined on the yatse developers web page.
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But there aren't many app developers using the custom intents, so i want to add the feature by myself.
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Edit
: i found this on stack overflow for opening apps through url but never got it to work:
http://stackoverflow.com/questions/2958701/launch-custom-android-application-from-android-browser

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Hi,
I'm trying to build the default Email app from source.
Using the CM10.2 as base: https://github.com/CyanogenMod/android_packages_apps_Email
I used some patches, which I successfully applied, as this is the main reason of doing this whole thing
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Thanks!
bump
please help
any some hint would be nice!
bump?

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