Download Infinix X551 Clone MT6580 Firmware Stock Rom
Infinix Copy (mt6580) Clone FlashFile
Follow how to flash infinix x551 clone with flashtool from here
Follow how to flash infinix x551 clone with Miracle box from here infinix x551 Clone Firmware
Download Infinix X551 File Stock ROM
File Name: Infinix_Note_X551_MT6592_5.1_20150910.zip
File Size: 892 MB
Android Version: 5.1
File Name: Infinix_X551_Hot_Note_MT6592_5.1.zip
File Size: 892 MB
Android Version: 5.1