WP8.1 GDR1 - update downloaded couldn't be opened

I also had the 80188306 error on my German Lumia 930 (CV). I flashed my phone with the NL CV ROM (059W1H9) using Nokia Care Suite and after that, I was able to update my phone.
 
Lumia 620 (CV DE) on DP updated fine. Lumia 925 (32GB Vodafone) and Lumia 625 (CV FR) both with DP+Cyan fail to update with this dreaded error.
 
anyone have less than 3gb of free space?
according to the answer from microsoft "Also to install new update on the phone you need at least 3GB of free space on your phone, your battery have to be more then 50% full as well."

but that's because if you don't have enough space you can't download the update. Once you have downloaded the telephone should install it. This is a problem of MS
 
Same error here Lumia 925+Cyan... this whole update process is soo messed up seriously.
 
Why the bloody Hell those who write the code for the error numbers to appear doesnt provide an info on some website about these error codes and the meaning they have? e.x. error code 80xxx : not available free space, error 82xxx : check internet connection...etc.
 
Not working, getting 80188308 on Nokia Lumia 630, CV GBIE with 3.7GB free.

Update is currently installing fine on Huawei Ascend W1-U00 (O2-UK).
 
I think reverting back to Lumia black might be the solution..may be.
Most of us with Black are having this issue, so I doubt that will help. Reverting back to WP8 with hard reset, and then installing this update with Developer Preview seems to solve this for some. I am going to wait for MS to fix this update, as a hard reset and WP8 revert is not something I want to do just for this update.
 
After 4 failed attempts, (downlading complete, went to cogs screen and restarted after a few seconds) I've made a soft reset, restored my apps an my online backup and then at the first attempt everything worked as it should and updated correctly. Lumia 820 GB CV.
 
Viber is not available in Kuwait store ! And i am also not getting the update i tried 10 time but nothing happen ! And i waste my 900 MB internet also please help me ! What the hell !