@Alessandrols15

I have the exact same issue as you brand-new out the box keeps prompting for firmware update. Have SD card in, have reformatted the card have reset device to factory settings and repaired, rebooted router, stood next to router and still won't update device, flashes orange and red, goes white then resets after that it says update failed.

Frustrated with a new product out of box.

  @Wayne-TP 

I've checked the tech documents and I've tried a few solutions but still not manage to get it to update the firmware. It's currently on build 1.1.10.

I have a Deco M9 and I can see both a D235 AND D100C device on my network, curious as to why there is a D100C there, signal strength of D235 is -53(RSSI) a good strength.

When I initiate the download I see data downloading and uploading on the D235 on the Deco, at this point the light is white on the Doorbell, then data stops downloading, the doorbell goes solid red for 1 sec, then flashes red for about 2-3 secs, seems to reboot itself then the app returns a update failed error.

I have rebooted router and stood next to it update

I have tried via the 4G network on my phone

Factory reset

On my Deco router on the D235 device turned Mesh Technology off (I had this fix probs with androids)

fixed wi-fi band to 2.4ghz only

I also tried swearing at it which also didn't work.

any other ideas?

I'm from a tech background so feel free to get technical.

  @Wayne-TP I have the same issue, at version 1.1.10. I can't update it to 1.1.19. 
 

I have tried removing the camera, factory resetting and connecting again, no success. 
 

I also tried removing it, factory resetting and connecting to both a 2.4 and 5 ghz. 1 attempt on each, no success. 
 

I can't find a solution and it's pretty frustrating. 

  @SwimmingUpstair 

Mines still not updating either, must have spent at least 5hrs resetting, troubleshooting, trying to connect to different networks but still stuck with the original version and annoying messages.