This how you can use mod apk to log on your account.
1. Install original game and launch it
2. Play a match and go to achievements in game settings
3. Quit the game
4. Rename the obb folder. Eg. com.wb.goog.injustice.brawler2017xx
4. Uninstall original game
5. Install mod apk
NOTE: If your obb files are in 29181 mode change it to 19181 mode. Eg: "main.29181.com.wb.goog.injustice.brawler2017.obb" If your main and patch files are in "29181" change it to "19181". Then rename the obb folder back to its original name. Original name should be like this. "com.wb.goog.injustice.brawler2017"
6. Now launch the mod apk and enjoy
CAREFUL NOTICE:
Make a backup of the original apk. Make a copy of the original obb files. Should Incase it crashes, you can always have a backup to replace them
Now concerning the gameplays of V1. V1 MOD is still possible is raids but highly risky.
Do's and Dont's
1. Avoid MVASG Tag in damage
2. Don't use silver flash sp1
3. Don't use koaa sp3
4. Wait till timer hits 1:00 or less before attacking
5. Use arcane heroes for damage in raids. Don't one punch often. Use sp3
6. Don't tag in often. Use 1 player for defeat
7. Don't use mod apk V1 to open chest. It might be detected.
Thanks to y'all.
This process is for unroot phones and use sign in mod apk
1 more thing, becareful with silver banshee and Raiden in V1. Now is so risky in raids. There are more to discover. I'll let you know about it afterwards