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Help HTC ONE M8 Boot loop & wifi issues

Hello,
I need your expertise help to resolve my phone issues. Hope someone can help. Currently, i am bit panic that my device has become unusable. Please help!!

My problem statement:
1. HTC One M8 is currently in boot loop. It boots approximately around 6 to 7 times and then enters to normal operation. This happens everytime i reboot.
2. WiFi is greyed. unable to "On" the Wifi. Still i can use my data through my SIM card.
One Important information: I DONT HAVE ANY BACKUP. I LOST IT. i kept them in the internal storage and mistakenly wiped the internal storage as well. I am unlucky
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Brief of my device:
I bought this device from US. It came with AT&T. I came to India and i was using it without any issues. Howev, it doesnt update at all through Wifi or Data. Hence, with my limited knowledge, i unlocked, rooted and flashed with custom ROM. There the problem started. It got into boot loop and WiFi is greyed out. So, i thought brining back to Stock would resolve the issue and did the Stock ROm flash and recovery as well. No luck. Currently, i still have the boot loop and "WiFi" greyed out.
I used TWRP.

Below is current details & Versions:
-----------------------------------------------------
1. Bootlader:
M8_UL_CA PVT SHIP S-ON
HBOOT-3.16.0.0000
RADIO-1.16.21331931.LA11G
openDSP-V38.2.2-00542-m8974.0311
OS-
eMMC-BOOT 2048MB
Apr 18 2014,16:06:33.0
-----------------------------------------------------
2. fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.16.0.0000
(bootloader) version-baseband: 1.16.21331931.LA11G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: XXXXXXXXXXX
(bootloader) imei: XXXXXXXXXXXX
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul_ca
bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B12000
(bootloader) cidnum: CWS__001
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: c3d94491
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.045s
---------------------------------------------------------
3. Software information

Androin version: 5.0.1
HTC Sense version: 6.0
Software number: 4.16.401.10
HDC SDK API level: Unknown
Kernel version: 3.4.0-g6af28ec and@ABM101 #1 SMP PREEMPT
BASEBAND VERSION: 1.16.21331931.LA11G_20.31A.4145.02L
Build number: 4.16.401.10 CL448934 RELEASE-KEYS
------------------------------------------------------------------

Awaiting your valuable help. Thanks in advance!
Apologise if it is not the right forum.

Thank you,
Selvaraj
 

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