@Rajio: I'm sorry to advise that it is not possible to revert to a previous Android / One UI version following an update. If the problem should persist then please submit an Error Report via the Samsung Members app, and our team of experts can explore any potential software issues which might be affecting your Bluetooth, Wi-Fi and Hotspot connectivity.
To do so, please open Samsung Members > Support (bottom right) > Send arrow (bottom right). You will now be notified that Samsung Members is collecting system log data.
Select your most relevant category > Adjust the “Frequency” section depending on how often the issue occurs > Ensure “Send system log data” is enabled to attach the log > Write a detailed account of the experienced behaviour, as well as timestamps if possible. Finally, attach any relevant video, image or audio files using the paper clip in the top right, before pressing the Send arrow. When doing so, please submit your report within 5 minutes of encountering the problem, as this will ensure that the attached data accurately reflects the issue at hand.
