@antoantony , today (2024-Sep-6) I noticed that the Kasa app displays a new firmware 1.5.6 available for upgrade. Did you try that? If so, what was your experience with it?

In my case, my smart plug HS105 was still with its original firmware 1.2.9 when I purchased it years ago. The smart plug largely worked fine with that old firmware, but today I noticed that, after I moved the smart plug to another wall socket (i.e. a power-off and power-on cycle), the plug stayed with blinking blue light (same symptom as this old question), however, it turned out it would automatically recover HOURS LATER, WITHOUT needing to do any reset operation. And it happened again after I moved it to yet another socket.

So, shall I upgrade to firmware 1.5.6 and risk getting worse, or shall I just stay with the plug as-is?