Question [Q] HTC One convert to GPE

Hi!

I'm trying to convert my HTC One to Google play edition to get rid of HTC Sense and to get faster updates.
I have followed these guides:
http://forum.xda-developers.com/show....php?t=2766134
http://htc-one.wonderhowto.com/how-t...dates-0148068/

Here's some info about my phone:
hboot 1.57
m7_ul
5.11.401.10
cid: HTC__Y13 -> GOOGL001
modelid: PN0710000

What I've done:
- Unlocked bootloader via HTCDEV
- Installed TWRP
- Installed Super-User to get root
- (tried to get s-off with firewater which didnt work since i got a message about a HTC-anti-firewater-patch)
- Installed Bulletproof kernel to get passed the HTC-anti-firewater-patch
- Got s-off via firewater
- Tried to change my cid to GOOGL001 from HTC__Y13 - Got an error message, but after rebooting, fastboot getvar cid gives me GOOGL001...
- I now tried to install RUU-HTC_One_GE-4.4.2-3.62.1700.1_Rooted.zip but got annan error message: "read zipped android_info fail"

What have I done wrong?
Any ideas? (I have never installed an RUU before)

I'm thankful for any help