I didn't remove the power or switch it off yet.
It was stuck in the upgrading for some time.
Suddenly its gone and exit the service menu and the tv is working and smart hub is working.
Until now I didn't switch it off or removed the power plug
But iam still afraid what will happen after turning it off or power loss
Any thing I can do before losing the tv
Any help is deeply appreciated.
Its still working after rebooting but with big dark shade at the bottom of the screen
really appreciate any help