Error while updating my Lumia 920

[Lumiator]

Hello to everybody! I own a Nokia Lumia 920 running Lumia Cyan, from the "Preview for Developers" app. Everything seems fine with the device, however when i attempt to update my software, the update is downloaded successfully, but I keep getting an error message saying "The update was downloaded, but couldn't be opened (8018830f)". I must also say that I un-enrolled from the "Preview for Developers" program. What is going wrong? I would be glad to hear any possible troubleshooting answers! Thank you all in advance!

 

[vipme]

If you want to recover your phone back to latest available OS version try this

Recover my phone

FAQ - How can I recover/reset/restore my phone software? - Microsoft - USA

But back up everything you need first.