Question [Q] HTC One GPE...

Hi all.. I'm new at this forum so you can call me newbie..
The past weak i have been trying to convert my HTC One in to stock Google PLay Edition HTC One..
The steps i took for this was:
1:unlock bootloader using HTC Dev site
2:installing TWRP recovery
3:rooting my HTC One
4:s-off my HTC One
and now i'm stuck on the last step...
5:convert HTC One into stock Google play edition...
first i used this guide i manage to do all the steps untill i stuck on the step 5: flash RUU when i try to flash the RUU i get the folowing msg:
Microsoft Windows [Έκδοση 6.1.7601]
Πνευματικά δικαιώματα (c) 2009 Microsoft Corporation. Με επιφύλαξη κάθε νόμιμου

C:\Users\QQNabs>cd C:\sdk-tools

C:\sdk-tools>adb reboot bootloader

C:\sdk-tools>fastboot oem rebootRUU
(bootloader) Start Verify: 0
OKAY [ 0.055s]
finished. total time: 0.058s

C:\sdk-tools>fastboot flash zip

C:\sdk-tools>fastboot flash zip
target reported max download size of 1526722560 bytes
error: cannot load '': No error

And thats where i left off and tryed to use your guide
and the same thing happens i get the msg that i get above...
please if someone can help me...
Note HTC One spesifications: Android version 4.3,HTC Sense version 5.5, Software number 3.62.401.1,kernel version 3.4.10-gfa33c1e root@abm012#1 SMP PREEMPT