You can get it here. Pay attention to the hardware version and don't go bricking your older non-2013 JPT3815W with it!
The front green power LED state can now be controlled (On/Off/Blink) from the System > "Misc Setting" section.
Regrettably, there's still no option to select the outdoor video mode, and still no way to turns off the whole LED ring. Maybe next time!
The official changelog is as follow:
I. Added front power indicator LED control
II. Resolved email alert malfunction when using 4 email recipients
III.Resolved bug when using 21.cn as sender email address
IV. Resolved unsigned plug-in issue
V. Improved alarm schedule