Requesting for a New ROM for install on my phone

My prompted for a privacy protection password and it requires flashing because when i carried out hard reset, it failed. however, am failing to get the best ROM to replace the existing ROM.
my phone details are;
BB Chip: MT6572
Kernel ver: 3.467
android ver: 4.4.2
sw ver: ALPS.KK1.MP6.V1
Custom Build Number ver: P900E_En20150606
Also the phone is not a genuine Sony Xperia phone.


I will be glad for the best posted link for the ROM as my phone is a month down without usage
Thank you
Basooma Uganda