So I decided to mess with my Dahua intercom that has been working flawlessly since I installed it to try and get the push notifications working on my Android phone with the gDMSS app. So.... Problem 1 I have 1 x VTO6210B (door station) I upgraded the firmware to from V1.0 to V3.1 and 3 x VTH1510CH (indoor monitors) with firmware V1.0. I have been unable to upgrade the firmware on the VTH1510CH. I get error message "Account is locked" or "Failed to clear config" when I use VDPConfig to try and update firmware. I used Configtool v1.0.5 to upgrade the VTO6210B but it did not work to upgrade the VTH1510CH. It says "File transmission successful, system upgrading now..." but it doesn't finish. I tried Configtool v2.0 but it hangs at "sending upgrade data...." I tried Configtool v3.21 but it hangs at "All data transferred please wait..." So, does anyone have any tips for upgrading the indoor monitor firmware. Problem 2 My door station will only ring one monitor (master) and I can't add extension monitors in the web app under system config-> indoor manager. Everytime I try to add one it replaces the master. Under Status Statistics-> VTH status - it only shows the master All 3 VTH monitors show in VDPConfig with their correct IP address. The extension monitors have a little door station icon in the top corner with a red cross. I can't figure out what has changed in the door station settings that it doesn't allow me to add my extension monitors. I filled out a support form on the Dahua website but that page just crashes. Great support.