[One (M8) Q&A, Help & Troubleshooting] Bob in the UK:
I require a bit of help please.

I have a UK HTC One M8 on the Vodafone network which was stuck on the bootloader screen. I followed steps 1 through to 14 from reading posts 1 through to 5 and managed to get the phone up and running – to a certain degree. This is where I need you help and guidance.

Initial getvar all information when stuck in bootloader mode:

C:\Users\Owner22\Desktop\RUU>fastboot getvar all

(bootloader) version: 0.5

(bootloader) version-bootloader: 3.19.0.0000

(bootloader) version-baseband: 1.25.214500021.06G

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main:

(bootloader) version-misc: PVT SHIP S-ON

(bootloader) serialno: SH4BBWM00599

(bootloader) imei: ***************

(bootloader) imei2: Not Support

(bootloader) meid: 00000000000000

(bootloader) product: m8_ul

(bootloader) platform: hTCBmsm8974

(bootloader) modelid: 0P6B10000

(bootloader) cidnum: VODAP001

(bootloader) battery-status: good

(bootloader) battery-voltage: 0mV

(bootloader) partition-layout: Generic

(bootloader) security: on

(bootloader) build-mode: SHIP

(bootloader) boot-mode: RUU

(bootloader) commitno-bootloader: 255f41e7

(bootloader) hbootpreupdate: 11

(bootloader) gencheckpt: 0

all: Done!

finished. total time: 0.063s

meid: are all zero’s – if this is relevant

I flashed TWRP v3.2.3-1 (as I think phone was on MM when it was working), followed by flashing fw_6.12.161.4 from #5 because I thought I required a signed firmware. So, fw_6.12.161.4 was the only one that matched my CID and MID. Then followed process for installing 4.19.161.2_ckpv5 as I think I read I needed to install a lower version first.

I have had the phone unlocked to all networks and the phone is now (almost) working with any network SIM. Using a 3 SIM presently.

I manually searched for software updates on the phone and it updated twice.

The problem is that when I search for software updates, it finds two: (1) HTC Sense Home 46.1MB v8.13.781902 and (2) HTC Mail 8.27MB v8.2.868761 which when downloaded comes up with the error:

Unable to complete the installation

An error occurred while installing the software updates

You may check for software updates again in Settings, under About.

and “The Software Information” screen shows:

Android version 5.0.1

HTC Sense version 6.0

Software number 4.19.161.3

Current getvar all info is:

C:\Users\Owner22\Desktop\RUU>fastboot getvar all

(bootloader) version: 0.5

(bootloader) version-bootloader: 3.19.0.0000

(bootloader) version-baseband: 1.29.214500021.12G

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main: 6.12.161.4

(bootloader) version-misc: PVT SHIP S-ON

(bootloader) serialno: SH4BBWM00599

(bootloader) imei: ***************

(bootloader) imei2: Not Support

(bootloader) meid: 00000000000000

(bootloader) product: m8_ul

(bootloader) platform: hTCBmsm8974

(bootloader) modelid: 0P6B10000

(bootloader) cidnum: VODAP001

(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: 76df2b54

(bootloader) hbootpreupdate: 11

(bootloader) gencheckpt: 0

all: Done!

finished. total time: 0.071s

Does anyone know me what I have done (or doing) incorrectly? I’m trying to get back to Stock UK Vodafone on Marshmallow. Any advice and guidance would really be appreciated.

Happy to provide any other information you may require, but go gentle on me as I’m new to this game.