Follow this guide to unlock your bootloader, and try to flash it again

Error
 

My bootloader is already unlocked
And When I tried to flash rom with unlocked bootloader it was giving error 32
After that I relocked bootloader and tried to flash rom it was giving error 12 verification error

shaikh_shoeb50 asked you for Phone Boot Info, Modelid, Cid,Main Version.
to get that info, put phone in fastboot and type "fastboot getvar all".
Maybe shaikh_shoeb50 will help you ;)

Bootloader : 3.19.0.0000

Baseband: 01.01.010_u1030481_08.01.41119
Main version: 1.22.720.1

Serial: CC4CRYC02835

PRODUCT: a51_dtul

Cid number: htc_038

Asia india

I have already downloaded this File and this file is corupted can

file not corrupted yu can not extract it

flash via fastboot or via mobile

rename the file as 0PFJIMG
copy to sdcard
boot yur device into bootloader mode
it vil flash

I had tried to flash with fastboot but it always giving error 32 and sometimes error 12
Do u have other way to flash this i'll try it

Try this way

rename the file as 0PFJIMG
copy to sdcard
boot yur device into bootloader mode
it vil flash

Plz tell me the all procedure What to do after entering bootloader and What commands I should done

Use this special Htc fastboot driver

Rename the file as 0PFJIMG
Copy to fastboot folder wic i give
Cnnt yur device in fastboot mode
In fastboot folder hold shif+right click select opn cmmd window here
Run these cmmds

fastboot devices
fastboot oem rebootRUU
fastboot flash 0PFJIMG.zip
fastboot reboot

A51_DTUL
CID: HTCCN701

need ruu

Thnqq
 

Thank you all to help me
I successfully flashed ruu

Glad to hear that, what method did worked?