If you can't install unsigned apk for unknown reason even you patched 3 signature checks, you can install signed apk on top of original apk to keep your save data intact
So this is simple step:
Don't uninstall the original game and install signed APK straight forward
Your save data will be intact and Google login will still work until you reboot your device. Some games still logged in as Google even after it doesn't work, but don't log out because you can't login again until you install original APK
Video tutorial:
So this is simple step:
Don't uninstall the original game and install signed APK straight forward
Your save data will be intact and Google login will still work until you reboot your device. Some games still logged in as Google even after it doesn't work, but don't log out because you can't login again until you install original APK
Video tutorial:
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