Lost my keystore file

I uploaded android game to the play store one month ago, I created a keystore for this first version of game, however I want to update it now but I lost my keystore file, so when I try to upload the APK to the play store, it gives me this message:

You uploaded an APK that is signed with a different certificate to your previous APKs. You must use the same certificate. Your existing APKs are signed with the certificate(s) with fingerprint(s)

68422-myshaerror.jpg

How can solve this, I really need to update the game because the old version has some mistakes

In case anybody else out there needs help with this issue I’ve written an easy step by step guide that hopefully will save you some hours of head bashing against the wall: http://cauldron.pt/pt/lost-keystore-how-to-generate-and-register-a-new-upload-key-mac/

You can update your app using new keystore file ,you need to enable google play app signing on play store console, create new keystore certificate and update on play store console,it’s Possible now, After May 2017 you can Update your app if you lost your keystore or keystore password.you can update your app using new Keystore file please refer this Update keystore certificateon playstore (Geek Code Hub) here i wrote how to update apk if you lost your keystore follow the step and create new keystore , I updated my app using this step. you need to enable google play app signing on play store console

Try this . If it works for you.
https://code.google.com/archive/p/android-keystore-password-recover/wikis/HowTo.wiki