[Device Reviews and Information] stapo101:
Success with Lollipop+TWRP+Root+Viper4Android+Exposed

I can confirm success with this phone and Lollipop. I now have Lollipop running with TWRP recovery that allows me to make backups. The phone is also rooted (using flashable SuperSU zip from recovery) and I also managed to install Xposed yesterday which is running well and improving battery life using the Amplify module. I wrote this over on needrom and will quote it here:

Ok. The ROM that I used was the one available at ecoo.hk/download.html . It's the one for the E04 3GB "Android 5.0 20150430".

I am going to assume you know how to use SP Flashtool already, if not there are plenty of tutorials around. Here are the steps that I would reccomend, although I am strictly an amateur and some of them may be redundant but worked for me.

****Be aware that this will install a completely fresh install on your phone, you will lose all data and your IMEI information which you will have to enter later. Do not do any of this if you don't have a note of your 2 IMEI numbers. They should be written on the packaging or under the battery of the phone*****

1) Download the ROM from the ecoo.hk website

2) Remove any SD card from the phone

3) Flash the full rom using SP Flash Tool, use the option "Format All + Download"

4) Boot up the phone, you now have a "stock" install of the ecoo android 5.0 ROM, at this point you could open up the Fingerprints app if you like and check that it is working.

5) To install the recovery you will need to download the latest version of Spacerom from the original Italian forum. The link can be found on needrom. If you go into the comments for the Spacerom ROM you will find the link. You will then find the download link to the ROM on page 88 post #874 (sorry, I don't have enough posts to be able to post a direct link here)

6) Using SP Flashtool you will need to use the scatter file from the stock rom, select download only, uncheck everything other than boot, recovery and userdata. Replace these 3 files with the ones found in the Spacerom (you can do this by clicking on their paths in SP Flashtool, it will ask you to browse for the new file)

7) Once you have flashed the recovery, boot and userdata you can reboot and again check that the Fingerprints app is working

8.) You will now need to re-enter your IMEI information, – I use the MTK Engineer mode app found in the playstore.

9) To Root the phone I used the latest SuperSU flashable zip, this can be found at XDA amongst other places. You can flash this via recovery, this will give you root access, I find it easier than iRoot, Kingroot etc.

10) Don't forget to put your sd card back in!

Once you have rooted I would thoroughly reccomend installing Viper4Android, this vastly improves the audio and most importantly the headphone volume. Search for "installing viper4android on android 5.0" for instructions and files. If you use your phone for listening to music then this is a must have for the E04 as left to it's own devices the volume level on headphones stinks.

Just FYI I also use HTC Sense 7 and Blinkfeed as my launcher of choice, again this can be found on XDA. I had no issues installing this and can switch between this launcher and the default nova launcher in Settings>Home.

[MENTION=5917082]SimoneGuarrera[/MENTION] (Spacerom) has done some great work and as you have downloaded Spacerom you may want to have a play with that. I have installed it and it works, comes pre-rooted and also has TWRP already, and the fingerprints work. I know that it is running a modified kernel so he may have made some improvements to the overheating issue. I haven't been running it long enough to tell – and google translate is hard work on the forum! One big bonus is that it comes with it's own OTA updates.

I installed the experimental xposed for ARMv8 yesterday (found on XDA) and it worked straight off the bat. I have been able to use Amplify and Gravity. By adjusting the settings for NlpWakeLock and NlpCollectorWakeLock the battery performance today is vastly improved.

Hope this all helps.