Lets get it from the start,
Are you rooted?
What recovery have you installed?
What MIUI version have you installed?
What do you want to achieve, as Final State of your phone?
Then, I can provide a better solution to the problem.
Sent from Xiaomi Redmi 2 - Marshmallow SNAPSHOT by Kumajaya
If you don't need it, you can uninstall every other app.
If you are root, install Titanium Backup to have better control of installed apps.
(Beware: Titanium Backup is a powerful Tool)
Sent from Xiaomi Redmi 2 - Marshmallow SNAPSHOT by Kumajaya
So, you basically want to repair an already dead phone, that too yourself.
Do you know anything about the electronics?
And this is a support Forum not a Repair Forum.
Good Luck
Using TAPATALK on Redmi 2, Marshmallow SNAPSHOT
The file you downloaded is wrong. Refer to miui forum for correct files to flash.
Check twice before flashing any files, this could ruin your phone.
Using TAPATALK on Redmi 2, Marshmallow SNAPSHOT
Only Google play store is required for Google functionality. Every other Google app is just a utility to perform different tasks. Whatever you don't use, you can uninstall it.
Using TAPATALK on Redmi 2, Marshmallow SNAPSHOT