I flashed today my Huawei according to your instructions and all went fine - so, let me thank you first! 
But, due to that:
I don't get the update notification anymore and I am not able to do the update on the Phone - to late
Any ideas to install WP 8.1 without notification on my Phone?

But, due to that:
What handset do you have? Did you flash the ROM on the first post? Eli A (MSFT) says that he has suspended the WP8.1 download for Huawei devices.
EDIT - This is the quote from Eli A on the MIcrosoft Community:
"Hello Folks,
Just a quick heads up as to where we are at on this specific issue. Until we roll out the next release, we have decided to stop the update notification to the Huawei Ascend devices so that you don't get your hopes up only to have it error again. As soon as we have this fixed, you will see an update and that should help brighten your day.
Other then that, I don't have anything else to share for the time being. As soon as I have more, I will bring it back here for everyone to hear.
Thank you,
Eli A"
I don't get the update notification anymore and I am not able to do the update on the Phone - to late

Any ideas to install WP 8.1 without notification on my Phone?