So with 9th August 2018, Kabam introduced a new protection to bypass Modified APKs by having their original signature only login on the server. To bypass this protection you need ROOT.
1) X-Plore Viewer and Lib Replacing. Download the modified Lib Files from any forum or 4pda Forum from Vutak, and then download the original game from the playstore and login.
Then download X-Plore Viewer from the Playstore and go to Root/Data/Com.Kabam.Marvelbattle/lib/
Here you will see a lot of .SO files. Replace the original one with the modified lib file you diwmloaded(Mod 1, Mod 2, Mod 3, Mod 4)
2) Luckypatcher and BusyBox
Make sure your device has root access. Download the original app from the playstore and login using Google Account.
The download the Modded APK for mcoc and replace any file and put it back to make it unsigned.
Then download BusyBox and LuckyPatcher. Grant them both Root Access. Then go to BusyBox wait for it to load and install BusyBox. Then reboot your device.
Then go to Lucky Patcher and wait until the “toast” appears with root access granted(SU)
Then go to Toolkit/Patch To Android
And click the first two patches and apply.
**Make sure you have patch to dalvik-Cache ticked!**
Then apply the third patch and make sure ALL THREE PATCHES ARE APPLIED.
Go to any file manager and go to where you downloaded the unsigned APK and install. Login with Google Account or Kabam ID
The protection was just to force the user to use Google Login or validate the original developer certificate. This is only way for Root now.
I’m working on a bypass for non-root as well.
Marvel Contest of Champions August 2018 Bypass ?
~ Otriux