HTC One m7 unlock , root , downgrade to get update 4.4.3 sense 6

sometimes when you have problem with your htc, you may need to downgrade or back to stock.

its happen to my htc 4.4.2  sense 5.5 CID HTC___044 model 0711000 hboot 1.57 firmware 5.12.707.4, my problem is i always failed to install update 4.4.3 sense 6 to my htc, 

depends my searching on google 

you may need the following step

1. UNLOCK BOOTLOADER
2. INSTALL CUSTOM RECOVERY
3. ROOT yout HTC ONE M7_U
4. S-OFF your HTC using firewater
5. INSTALL FIRMWARE
6. CHANGE CID to SUPERCID
7. FLASH HBOOT to 1.44
8. RELOCK your BOOTLOADER
9. INSTALL STOCK FIRMWARE 4.1.2 ( it will remove tampered flag too ) 
10. Upgrade OTA to 4.2.2, 4.3.x, 4.4.2 ( sense 5.5 ), 4.4.2 ( sense 6 ), and finally 4.4.3 Sense 6 

i will post tutorial of each stage