2 days ago my TV proposed to install an update.

I started the process and got the usual update screen with progress bar, rotating arrows and a sign warning me of not switching off the power.

I left the TV to update the software and after 2 hours I found out that the TV is stuck on the same screen. It is not updating but instead, the progress indicator reaches approximately 25% (with LED flashing white) and then the TV is rebooting (LED flashes blue once right before the rebooting) and the update starts again. The TV was in this mode for about 10 hours and nothing has changed, just continuously rebooting at the same ~25% progress so I had to disconnect the power cord.

My internet access is quite fast, so I believe it is not a question of downloading the update, and I could not find similar problems here in the community so it may look like some problem.

Could you please advise if there is any way to fix this problem or I need to repair it.