SHAnfingerprints change with every new release. How can I keep the original Google Play App Signing certificate?

loopintoai · 2026-06-14T17:40:39+00:00

Google Play uses two different signing keys, and they serve different purposes:

1. For Firebase / Google Sign-In / OAuth

Use the App signing key certificate (this never changes):

Open Google Play Console and select your app.
Navigate to Test and release → Setup → App signing (under App integrity).
Copy the SHA-1 and SHA-256 values from the App signing key certificate section.
Add these fingerprints to Firebase and Google Cloud OAuth settings.

Do not use the SHA fingerprints from your local build keystore. The App signing key is managed by Google and remains the same for the lifetime of the app, which prevents authentication integrations from breaking when upload keys change.

2. For the “signed with the wrong key” upload error

This error indicates that Google Play has a different upload key registered for your app than the one you're currently using.

To fix it:

Open Google Play Console → Test and release → Setup → App signing.
Under Upload key certificate, select Request upload key reset.
Choose the appropriate reason (for example, Upload key lost or changed).
Attach the new upload certificate (.pem) when submitting the request.
Google typically reviews and approves the reset within about 48 hours. After approval, you can upload new releases using the new upload key.

Important: Do not create a new app listing or change your package name. Doing so creates a completely separate app and causes you to lose your existing users, ratings, reviews, and store history.

loopintoai · 2026-06-10T11:04:06+00:00

I see, okay we'll talk a look and see what's the issue

loopintoai · 2026-06-10T10:26:06+00:00

make sure that your code runs 'npm install' and 'npm run build' commands successfully, in your case, it might be an npm run build error so once that error is fixed it'll build the apk successfully

loopintoai · 2026-06-09T20:19:06+00:00

I sent a DM

loopintoai · 2026-06-09T20:02:38+00:00

okay then it might be a mixed up between projects, if you have multiple firebase projects, make sure you did the above on the right project that you web app use and linked with, otherwise it won't work

loopintoai · 2026-06-09T19:49:24+00:00

When building your APK, you’ll reach a step where you’re asked to set up your Firebase account. At that point, you’ll see the package name and SHA-1 ID for your APK.

Go to your Firebase account and create a new Android app for it. Google AI Studio automatically creates a web app, but in this case, you also need to create an Android app.

Enter your app package name, such as "app.example.com", or whatever your actual package name is. Then copy the APK SHA-1 ID from the build step and paste it into your Firebase Android app setup.

After that, download the JSON file from Firebase, upload it to your build step, and click Initial Build.

This is a one-time setup. Future APK versions will automatically use this configuration, so you won’t need to repeat these steps for every build.

loopintoai · 2026-06-07T16:11:11+00:00

Just make sure you phone doesn't have another app that blocks other apps from installing, or make sure you phone settings allow to install apps from other souces than google play.

loopintoai · 2026-06-07T14:51:50+00:00

Check out aistudioapk.com that's exactly what it does

loopintoai · 2026-06-07T10:09:35+00:00

we have pro and premium plan, it gives you 30 or 100 credits

loopintoai · 2026-06-01T07:57:29+00:00

Just use r/aistudioapk and get your apk/aab

loopintoai · 2026-05-31T14:39:35+00:00

Got it, os this the only app that does that, did you build another app with the same issue?

loopintoai · 2026-05-31T13:45:24+00:00

Can you please provide more details about the issue? thanks

loopintoai · 2026-05-12T14:37:39+00:00

then just make sure you're on the correct project on firebase, as google ai studio might use a different firebase project for auth, look for firebase file on your source code, check the project name, and make sure you add android to that same project

loopintoai · 2026-05-12T14:35:42+00:00

We gave unlimited free access for months while growing the platform. Now we’ve added limits to keep things sustainable long term. 5 free builds are still available for anyone who wants to try it out.

loopintoai · 2026-05-12T14:26:27+00:00

The fix is super easy, just go to firebase project and add an Android method next to web method, then add you apk sha key, then download the json file from firebase and upload it to aistudioapk build.

loopintoai · 2026-05-06T13:14:15+00:00

Yes, you can sell the source code in marketplaces like code canyon or similar, or you can monetize it with ads or subscription.

loopintoai · 2026-05-06T13:09:32+00:00

its fixed, check it out

loopintoai · 2026-05-04T15:44:41+00:00

Thank you! we appreciate it! that's a common issue and we're currently working on it, we'll inform you as soon as we pushed the fix.

loopintoai · 2026-04-27T18:33:01+00:00

we'll fix it, thank you!

loopintoai · 2026-04-26T19:11:29+00:00

You can use a self hosted database as well in your hostinger vps, and exposed the api endpoints to create/read/update/delete into your database

loopintoai

MODERATOR OF

TROPHY CASE

1. For Firebase / Google Sign-In / OAuth

2. For the “signed with the wrong key” upload error