Bricked mi4i by downgrading install update package in updater, please help me

My friend told me to downgrade his mi4i but he dont wanted to root or unlock bootloader,so I had downgraded my friends mi4i from v7.3.1.0 to v7.0.3.0 using the update package, I had flashed it from updater,but due to which it got soft brick issue,but now I really got tortured . The phone is starting but showing error message "setting is unfortunately closed" again and again , only notification panel is working and power menu. wifi is not working, I had tried to get into the updater back by closing error message again and again and fast so that I can update back to latest version but internet is not working even wifi is not starting up as I told, Even phone is not connecting to computer on usb debugging mode and mtp mode, due to which its not connecting to mi pcsuite. Even I cant recover it back from mi pcsuite. Last option to unbrick the phone was to install fastboot rom, so I downloaded the global fastboot rom v6.5.6.0 and I have Windows 10 32bit so I downloaded miphone2015731, then extract the rom on E drive and paste its link on miphone "the link dont have space in between" and had choosed flash all, then connect his phone on fastboot mode to computer, then refresh the miphone, then phone appears on miphone, but when I flash it, it starts the flashing process but no progress is giving not even 1%, then I disconnect he phone, I had used the given mi usb cable, as I told the bootloader of phone is locked, please help me if you know what to do now, I am really tried a lot to fix the phone and now dont know what to do :crying: , when I check the changelog its showing this :-

[00000524]CreateManagedObject(1392): Unspecified error(0x80131604)
[00000524]GetFactoryObject(1436): Unspecified error(0x80131604)
[00000524]CreateManagedObject(1392): Unspecified error(0x80131604)
[00000524]GetFactoryObject(1436): Unspecified error(0x80131604)
[00000524]GetFactoryObject(1457): The specified service does not exist.(0x800704db)
[00000524]GetSearchPath(1512): The specified service does not exist.(0x800704db)
[00001A20]9301def0 0.00 execute E:\ferrari_global_images_V6.5.6.0.LXIMICD_5.0_glob al\flash_all.bat
[00001A20]9301def0 0.02
[00001A20]9301def0 0.02 $fastboot -s 9301def0 getvar product 2>&1 | findstr /r /c:"^product: *MSM8916" || echo Missmatching image and device
[00001A20]9301def0 0.03 product: MSM8916
[00001A20]9301def0 0.03
[00001A20]9301def0 0.03 $fastboot -s 9301def0 getvar product 2>&1 | findstr /r /c:"^product: *MSM8916" || exit /B 1
[00001A20]9301def0 0.05 product: MSM8916
[00001A20]9301def0 0.05
[00001A20]9301def0 0.05 $fastboot -s 9301def0 getvar soc_id 2>&1 | findstr /r /c:"^soc_id: *239" || echo Missmatching image and device in soc_id
[00001A20]9301def0 0.06 soc_id: 239
[00001A20]9301def0 0.06
[00001A20]9301def0 0.06 $fastboot -s 9301def0 getvar soc_id 2>&1 | findstr /r /c:"^soc_id: *239" || exit /B 1
[00001A20]9301def0 0.08 soc_id: 239
[00001A20]9301def0 0.08
[00001A20]9301def0 0.08 $fastboot -s 9301def0 flash tz E:\ferrari_global_images_V6.5.6.0.LXIMICD_5.0_glob al\images\tz.mbn
[00001A20]9301def0 656.19 target reported max download size of 268435456 bytes
[00001A20]9301def0 656.19 sending 'tz' (496 KB)...
[00001A20]9301def0 656.19 FAILED (data transfer failure (Too many links))
[00001A20]CScriptReport:: DoWork(420): Unspecified error(0x80004005)
[00001A20]GetFactoryObject(1457): The specified service does not exist.(0x800704db)
[00001A20]SaveFlashResult(1478): The specified service does not exist.(0x800704db)