[Device Reviews and Information] chagato:
Okay then I guess I'll post a detailed way to unbrick this phone after the last update. I can't promise anything exctept that it worked just fine for me and there might be other ways to do it.

First be aware that you will lose your data stored on the phone (unless a more savvy user can help with a way to back those up from this brick).

- Google "dg310 needrom" to find a ROM file marked as "Stock - official" on the Needrom website. You'll need an account to download the files. I've used those, they seem legit and worked for another user.

I think there are some up to date roms on the doogee.cc website but I didn't bother trying since my phone was fixed when I stumbled upon those. If you want to tray and give a feedback... ^^

Make sure to use the ROM, drivers and flashing software provided by the uploader to maximize compatibility and your chances of success.

-The rom comes with a fully loaded zip file containing the drivers you might need (USB VCOM - mtk 65xx preloader if not previously installed) and the up to date version of the flashing software "SP Flash Tool" (SPFT).

-You need an USB cable to plug the phone to the computer (mine was delivered with nothing but a charging cable).

-Boot the phone and wipe the cache and user data (might not be useful but I did it just to be safe). If the phone boots on a blank screen or not at all, remove the battery and try again until the loader comes up. Don't bother pluging in the phone now.

-Install the drivers and plug in the phone (choose USB VCOM drivers). Go to the device manager to check if it's recognized correctly (under "android device"). If not try (re-)installing the drivers manually from the Windows device manager. It took me that and a couple of full restarts.

-Unplug the phone.

-Uncompress the ROM file but keep the compressed file.

-Launch SPFT through "flash_tool.exe" and go to the "download" section. Tell SPFT where to find the scatter file (and the boot file if I remember correctly). The scatter file is in the uncompressed ROM folder and the loader is in the SPFT folder.

-Select "firmware upgrade" in the scrolling down menu.

-Every case appearing in the window should be checked.

http://i58.tinypic.com/20igoet.jpg

-When you're all set, hit the "download" button with the big green arrow.

-Now plug in the phone and make sure it's TURNED OFF. If it's correctly recognized, you'll see a progress bar. Wait 5-10 min until completion, you'll see a popup window with a green circle.

-Unplug the phone. Reboot normally.

-First boot might take at least 5min, just wait until the OOBE menu appears.

-Complete that little configuration thing then turn wifi/data on and go in "syst.settings->about phone->update" and run that until there's no more updates.

-Reinstall all your stuff. :(

--Optional--

To get root access (!!! if you didn't read the first part of the post..DON'T DO THAT BEFORE UPDATING IT'S WHAT BRICKED THE PHONE !!! ) :

-Go to "syst.settings->about phone" and multiple click on "build number" (at the bottom). You'll get a developper mode.

-Go back to the setting page and swipe down. Above "about phone" you'll see the developper mode. Enable debug mode for the USB.

-Go to the phone number pad and type in *#*#3646633#*#* to enter engineer mode.

-Swipe to "log and debugging" and click "user2root".

-Click on "Root".

-Download and use Root Genius after pluging your phone to the computer. Root the phone and wait until it's done.

Some other soft might work but this one went well on the first try for me.

-Backup your sh* from now on :p

(since the last update bricked the phone it might be wise to unroot before applying any further update)

Hope it's clear enough and that I didn't forget any step. Good luck guys!