My sister came up with her phone asking for password to decrypt storage and she said she didn't set any password. I can't put the phone on USB Debugging cause i don't have access to phone settings.
I tried to use Sony PC Companion to reinstall Android but it says that was not found any software to the phone. Also tried to install Android using a using a build by FlashTools but i'm getting an error to write files based on write permissions on phone since it's locked as encrypted.
The Recovery Mode (using power button and volume-up) doesn't work either.
How can i reset to factory settings or even reinstall Android with these conditions?