HTC M8 strange problem ,, looking for help

hello
first one hung at htc logo its s-off and cid :11111111.. when tried install official rom all step went good but when try reboot bootloader stuck on white htc screen ( no ruu black screen )
after tried unlock bootloader every thing went fine but still locked .. tried SD card update all went fine but when arrive bootloader update restart in white htc logo .

**** On back phone model 0P6B630 M8y *****

Code:

Reading information...
Using Fastboot mode...
Reading common information
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.16.0.0000
(bootloader) version-baseband: 1.15.2133156.UA12.5mv
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 1.54.401.109
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno: FA42KWM47326
(bootloader) imei: 358714057826399
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: 11111111
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: off
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: ab0efa49
(bootloader) hbootpreupdate: 11