this took me hour to work out and hours of research on xda and other websites, so here im trying to simplify everything into one post, so people can get back to sense
so first of course root your phone if u have a google edition, if you converted to GPE from sense you will already be rooted and you can start the process (with TWRP installed)
i did it successfully but it was a huge process as there are limited resources atm to help me do it, as to why i am posting this
1. first i downloaded HTC one m8 all in one toollink)
once you download this program you will be able to put the phone into bootloader, with this program you wont have to use comand prompt on windows to change the cid in bootloader.
2. you need to change the phones cid from goog to CID-11111111, of the m8 all in one toolkit it enters it in for you and writes it straight to your phone.
3. once you do this you need to download -
Flash 1.54 Image- http://forum.xda-developers.com/show...68&postcount=3
NOW YOU NEED TO USE COMAND PROMPT- TEST PHONE WITH - FASTBOOT DEVICES- SHOULD GET A NUMBER CODE IF YOUR PHONE IS CONNECTED PROPERLY
1.FIRST ENTER fastboot oem rebootRUU
THEN- fastboot flash zip (whatever you name it).zip REDO IT TWICE 1ST WILL FAIL )- THEN SUCCESSFUL
-Boot back into Bootloader
-Boot into Recovery
-then in twrp (MUST)
-Wipe Data, Factory Reset, Advanced Wipe-Wipe System, Data, Cache
-Restore or Flash a Sense Rom
IF I HELPED PLEASE LEAVE A THANKS
(i have been pretty brief in my explanation, everything you need is there for the tricky parts, but if you have problems with toolkit or anything else look it up on xda) but this post will cut down the process time!
thanks. i am not resposible for any faults or problems with your phone but if you do it correctly all should be good