If you have one Galaxy Watch 4, be careful when updating it. The latest update released by Samsung has “bricked” some watches — that is, they stop working after installation. Users from various countries report the failure.
The issue is related to the R8xxXXU1GVI3 update and happens on both Galaxy Watch 4 and Watch 4 Classic.
After installation, the watch continues to function in an apparently normal way. When turning off or restarting, however, the smartwatch does not come back. This prevents it from even being updated again to fix the problem.
Users in South Korea have been complaining about the issue on Samsung’s community forums. On Reddit, there are more cases from other countries, which indicates that the error happens with some frequency.
The GVI3 update was also released in Brazil. Reporter Bruno Gall de Blasi, from the technobloginstalled the version on his Galaxy Watch 4. It has not restarted the watch and has had no issues so far.
Samsung acknowledges problem in South Korea
Those who had their watch “brickado” don’t have much to do: the solution is to look for Samsung support or take the device to a technical assistance and hope to be able to change it.
according to Android Police, in South Korea, Samsung has shown to be aware of the problem and is fixing broken smartwatches for free. O technoblog contacted the company in Brazil and will update this text if it responds.
If you haven’t installed the update yet, it’s best to wait for a more up-to-date version, which will likely come with a fix. If you have installed and the smartwatch still works, be careful and don’t let the battery drain.

O Galaxy Watch 4 was released in 2021. It is Samsung’s first smartwatch to switch from the Tizen system and adopt Google’s Wear OS. the version Classic was the last to have the swivel crown, which was one of the great differentials of the line – the Galaxy Watch 5 abandoned the resource.
With information: Android Police, SamMobile.
https://tecnoblog.net/noticias/2022/11/08/galaxy-watch-4-para-de-funcionar-apos-atualizacao-de-software/