Stuck in system recovery I have a hTC D626w, after an interrupted update, it does not boot any more. When I enter recovery mode, I see the following message at the bottom of the page:

No file end with factory_update.zip found in SD card.


The message persists after removing the SD card. 

I chose wipe cache partition and wipe data/factory reset. But after selecting reboot system now, a white page appears on which I see hTC. 

Does anyone know what's wrong with my device?
Interrupting an Android update is not a good idea as your device is now in an "in between" state that is not usable.  

Most likely you have to flash a complete factory image (also called RUU image) of your device to recover it. 

Usually HTC devices support fastboot, which should allow to flash such an image to your device. Check the HTC ROM Download page for an image matching your specific device.