[One (M8) Q&A, Help & Troubleshooting] lalomayen:
Hey guys, if somebody could help me resolve my problem i´ll be eternally gratefully. A couple of days before i bought an international version of the htc m8 (0P6BIMG100), it had kitkat 4.4.4, and i want to upgrate the sistem to marshmallow, so, reading in the multiple forums i found a tread in this site that teaches how to convert the phone to google edition, when i started the fastboot it was locked (i unlocked it) and S-off with supercid 11111111 (the phone came rooted). I follow the instructions step by step and after the installation of the RUU finished, the phone boots in to the black google screen and enter in fastboot. So, i tried reversing the process and go to the sense version again, a friend (who happen to have an htc m8) help me do it and we manage to restore de backup that i made in TWRP. After that, he toldme to install a custom rom, i decide to install the Insert Coin Enhaced "ice-8.2.2_M8_UHL_MM60_SENSE80GP_HTC_WWE_6.12.401.4". And for my surprise, it worked!! However, the phone didn´t recognice de wifi antena, the sim, the front camera, etc and the imei, baseband, and all that stuff said "not available", after a few minutes, the phone began to reboot. Looking through different XDA forums many said it was the kernel, so i let my friend flash the google edition kernel (i still don´t know why i let him do that). After that, the phone simply reboots in the fastboot screen, so again reading in the forums i found that maeby was not a kernel issue, but a firmware thing. So, i been installing a hell of firmwares and one by one trying to install the rom, but it jus´t don´t work. The last upgrate that i did via "ext_card" (i rename it 0P6BIMG) end saying in red letters "device halted due to large image update fail" (i wipe de data of the microsd, i change the microsd for ahother one, and nothing) and a red flag appeared saying "image update fail!". After this, no matter which firmware i try to install it, i cant find the right one, besides, now in the fastboot getvar all command the "version-main: " is blank, it shows nothing. I also found the RUU.exe trends and i tried some of them, but they get stock in the "sending information 0/7 screen". After a while i enter again in the fastode screen with the abd command. So if anybody could help me i´ll be glad to invite the beers, i need the phone for work and it´s been a hell of 5 straight days without resolving this issue, these are the specs that are showed in the fastboot mode screen:

*** Software status official ***

*** UNLOCKED ***

M8_WLV PVT SHIP S-OFF

CID - 11111111

HBOOT-3.19.0.0000

RADIO-1.25.214500021.06G

OpenDSP-v48.2.2-00564-M8974_FO.1211

OS-

eMMC-boot 2048MB

------------------------------------

These are the specs in the "fastboot getvar all":

version: 0.5

version-bootloader: 3.19.0.0000

version-baseband: 1.25.214500021.06G

version-cpld: None

version-microp: None

version-main:

version-misc: PVT SHIP S-OFF

serialno: HT445SF02290

imei: ***************

imei2: Not Support

meid: **************

product: m8_wlv

platform: hTCBmsm8974

modelid: 0P6B10000

cidnum: 11111111

battery-status: good

battery-voltage: 0mV

partition-layout: Generic

security: off

build-mode: SHIP

boot-mode: FASTBOOT

commitno-bootloader: 3aa067db

hbootpreupdate: 11

gencheckpt: 0

Does anyone know what can i do? Apologies for the language, i´m not a native english speaker