reboot htc one m7, help me topic

my device htc one m7 AT&T, my phone not working, its reboots :(

Android system does not Working...

I want to put the official RUU firmware, pls help me...

Phone specs as follows

M7_UL pvt ship s-on RH
hboot - 1.44.0000
radio - 4A.17.3250.20_10.40.1150.04L
OpenDSP - V31.120.274.0617
eMMC - boot
Jul 5 2013,16:04:18:-1

Android 4.1.2
HTC Sense: 5.0
Build no: 1.26.502.15 CL213167 Release-keys
kernel ver: 3.4.16-g0a0f902
root@abm001 #1
smp preempt

image crc:
rpm: 0x5c2b29fe
sbl1: 0x3eabf110
sbl2: 0xa35fe42a
sbl3: 0xe8ef6c99
tz: 0x5b8ab6c5
radio: 0x13bcf252
hboot: 0xb7620927
boot: 0xf0cadd9b
recovery: 0xcb9d7d41
system: 0xba29c7c6