Unroot HTC M7 802d

I am not able to install software updates provided by HTC, so started with flashing RUU.

I am using HTC One M7 802d phone (Indian Dual SIM Version) and connected to MAC OS X machine.

I have downloaded M7C_DWG 802d Lolipop RUU from here and followed below steps:


adb devices
List of devices attached
HT44VMP00350 device
adb reboot bootloader
fastboot reboot-bootloader
fastboot oem rebootRUU
fastboot flash zip PN07IMG_M7C_DWG_L50_SENSE60_MR_hTC_Asia_India_7.17 .720.6_Radio_1237.29.35.0903_CNV_CNV_India_4.21_09 B_release_426120_signed.zip


OKAY [ 53.137s]
writing 'zip'...
(bootloader) signature checking...
FAILED (remote: 12 signature verify fail)
finished. total time: 168.861s

What will be the problem here? Attached screen-shots for more information about device and software.

[IMG="recovery"] http://ift.tt/1r8iUGw [/IMG]
[IMG="software"] http://ift.tt/1SD9fT3 [/IMG]

from xda-developers http://ift.tt/1r8iXlJ
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