Battery runs out in a few hours after update to 28.2

After updating my Fenix 6XS Pro to version **28.2**, I encountered the dreaded blue triangle of death. Despite performing both soft and hard reboots, followed by reinstalling the latest firmware (28.2), I have now noticed a significant issue—the battery drains within a few hours, whereas prior to the update, it would last an entire week.

This has become incredibly frustrating, and I would greatly appreciate any insights or solutions. Has anyone else experienced this issue?

Many thanks

Andrew