I cannot return back from the beta version

[alfastr]

Hi,
I don't know if anybody had such problem.
I had big problems with battery drain on my iphone 6 after installing 11.2 in november 2017.
Anyway I tried to install beta version and now I have beta, but I cannot delete it..
I tried everything..
And via itunes it is also not possble..
everywhere I get message that I have the most actual version (ios 11.3), so I cannot install anything else...
I checked the serial version number (15E5167f) and as I understand it's the second beta.. I cannot even get the most actual one..
What can I do?
I erased my iphone via icloud.com but later I get back to the same version..
and I still have that icon (Feedback), even after deleting the beta profile on my phone...
I'm a bit desperate..
Thank you in advance

 

[Michael Goff]

You went through these steps here and it did nothing?

https://www.macrumors.com/how-to/downgrade-from-an-ios-beta/

 

[alfastr]

yes, the problem is, that somehow I always have this 11.3 2 beta everywhere, even at my itunes
[doublepost=1522273757][/doublepost]I finally solved the problem via ipsw))

 

[IowaLynn]

Remove the profile.
https://beta.apple.com/sp/betaprogram/

 

[Shirasaki]

You should find and download a version of iOS firmware that is not beta and restore/update your device by selecting that firmware in iTunes.

 

[alfastr]

Thank you, I solved the problem with ipsw version, now it's ok