@Mischif93 

Hi,
Generally, the updating process won't take a few hours. You can turn off the camera, wait for two minutes, and turn it back on, then check if it will work again.

If the LED remains blinking green, try to press and hold on the reset button for 10s to reset it, and if you can reset it successfully, please reconfigure it via the Tapo app.

If the LED has no changes after reset, please refer to the link below to troubleshoot.
What to do if my Tapo Camera gets bricked or doesn't respond to a factory reset?

If any other problem phenomenon, please describe it in detail.

Best Regards