[Q] Noob want to upgrade to lollipop

Hey guys,

I purchased a HTC ONE M8 through eBay and wondered why I was not getting the lollipop update and contacted HTC and they told me that my boot loader is unlocked and that is the reason why I am not getting the updates.

I am currently running 4.4.2 android version and living in UK my network provider is EE. My original cid num is VODA001

Here is my fastboot data:

C:\ABDFAST>fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.16.0.0000
(bootloader) version-baseband: 1.15.2133156.U
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno: --
(bootloader) imei: --
(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
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.110s

Please could someone which firmware file I need to flash in order to get lollipop, ultimate goal is to install custom CM12. When ever I try to install CM12 via twrp when selecting and trying to install the package I get an error saying that I cant install due to bootloader being 3.16.0.0000 and need to update to 3.18.0.0000 or 3.19.0.0000 and have been told that I require a firmware update to get this? Is this correct?


Thanks

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