This update also appears to have removed all access to the 128Gb micro SD card that is installed in the hub so I've lost all recordings from all the other cameras too!  Grrrrrrrr!!!

Who tested this update before you pushed it out?  Thanks a bunch!  Going to have to go and buy another doorbell system now!!!

Right.  A bit more investigation on my part revealed that the Hub was no longer recognising the installed SD card at all and the SD card 'tile' in the app was no longer available to click onto.  The H200 firmware update process from earlier this afternoon appears to have corrupted my SD card (Ultima Premium high speed XC 50MB/s write and 100MB/s read).  Everything had been working perfectly for maybe a year or more and then today's update corrupted my SC dard and this also caused the D230 doorbell to no longer ring when pressed or stream video via the app even though it showed as connected to the H200 hub in the Tapo app. I tried rebooting the doorbell and the hub and this situation remained the same.  The other 3 cameras connected to the H200 would live stream but all recording functions were gone.  The hub was behaving as if the SD card was no longer present which unfortunately meant I could not even re-format it!

Then I remembered I had a spare unused SD card so I put this into the H200 and this time I got the prompt to initialize it, which I did.  Upon formatting a new SD card everything is now back to normal.

Most likely conclusion - the firmware update process corrupted the SD card.  This was possibly due to one of the connected devices actively writing to the card at the point the Hub began the update.  I have 3 Tapo cameras and my doorbell connected to the hub and they record on person detection.  The postman or any visitor will trigger this.

I'm pleased I've got my doorbell working again but not happy that TP-Link's latest firmware update has cost me an SD card.

Please ensure you test and error catch for this scenario before releasing future firmware updates.