[General Questions and Answers] tvladan:
some words of advice (for the ppl visiting this thread for the first time):

- before starting, MAKE SURE TO CHARGE UP the phone (at least 70%), otherwise you might brick it if the flashing process stops during r21 inital flash, r24 update or ebr1 and ebr2 flashing.

- before starting, MAKE BACKUPS of you apps, call logs, sms, contacts, sd-card contents (YES SD CARD, it might get corrupted if something goes wrong) !!!

- before starting, MAKE SURE that your phone is RECOGNIZED by the PC while the phone is TURNED OFF. Use USBDeview (search google for it) and check if you have the phone as DA USB VCOM port

- while using spflashtools DO NOT CONNECT the phone to the pc before pressing the download button. Just select the needed operation / process, press Download from spflastools and THAN plug the cable in the TURNED OFF PHONE

- if something goes wrong COME BACK TO THIS THREAD and ask for help!

- DO NOT SKIP ANY STEPS from tutorials / instructables.

ok guys ... so here we are ... managed to get R24 rooted and repartitioned as follows (the simplest way possible with the least amount of flashing things ;) ) :

tested on 4 phones (croc and sheep skin back) and worked on all 4

- install stock R21 (from doogee.cc site or from needrom site) with stock recovery, stock partitions and all stock using SPFlashTools in FIRMWARE UPGRADE mode, this will result in LOSS OF ALL PERSONAL DATA ... so make a backup, or two ...

- boot up the phone

- update to R24 over WIFI (FOTA) or download it and install it using the stock recovery

- turn off the phone

- format USRDATA using description from the first post in this thread (step 5 from [MENTION=5074219]NaturalBornCamper[/MENTION] 's tutorial at page 1) DO NOT POWER UP THE PHONE just unplug the cable from the pc go to the next step.

- plug back the cable and instal EBR1 and EBR2 using spflash tools and attached scatter, in download mode, tick only EBR1, EBR2 and UN-TICK/DESELECT recovery!!!!!! (attached 4 GB + 2 GB from 4pdaru, the 6GB + 0.1GB partitions from needroom DO NOT WORK, or for me at least, you will get stuck at white titans2 logo screen after restarting the phone, I have no idea why ... and I will not bother with repartitioning anymore, for me the 4+2GB setup works great and it is enough app space)

- power UP the phone .. let it do it's thing ... might take 5-10-15 minutes ... do not worry, if you see the green robot first and than the doogee colored logo appeares you are safe ... just be patient and wait until android starts up. At this point you should be on R24 with 4g app partition and 2g internal storage space. restart the phone 2-3 time to see if the repartitioning is ok and there are no bootloops, bugs.

- power off the phone

- install custom TWRP (attached, named recovery.img, but it is TWRP) using SP Flash Tools in download mode, tick/select only recovery, - > DESELECT EBR1 and EBR2.

After spflashtools flashes the recovery img DO NOT BOOT UP ANDROID, just press vol UP + power and boot recovery. First your phone should boot into the bootloader screen, using vol up select recovery and confirm selection with vol down. After this the phone should boot into the TWRP custom recovery.

- once in twrp go to reboot and select -> recovery. An orange/black screen will appear asking if you want to install superSU now. Slide the bottom slider to install / confirm! Let it install / reboot to recovery and after that reboot to system, it will take a wile, so wait !!!

- after android boots up you will get a notification saying: SuperSU installer: Tap to install supersu and root your phone. Tap it. From the installer select TWRP (must be coonected to wifi or 3g), after the download is completed tap continue, the phone will reboot into recovery and permanently root the phone, then restart itself back to system.

That is all! If everything was done properly you should be rooted, repartitioned with twrp, on R24.

If you get invalid IMEI error just follow this guide to get them back (probably you will after repartitioning):

1.Enter the engineering mod ( Start default phone dialer and dial as follows: *#*#3646633#*#* )

2.Go to: connectivity

3.Go to: CDS information

4.Go to: radio information -> phone1

5.Send the following commands to change the IMEIs: AT +EGMR=1,7,”IMEI_1” and AT +EGMR=1,10,”IMEI_2” (replace IMEI_1 and IMEI_2 with your IMEI number)

Please make sure there is a space between the T and the +: AT +EMGR=... and not AT+EMGR=...

6.Reboot the phone

or use mobile uncle tools (search it on google, download and istall apk.) to restore the imeis. THE IMEI1 and IMEI2 are written on the back of the phone UNDER the battery !!!

This being said, [MENTION=6718315]Nudeldampf[/MENTION] if you care to test this on the second doogee to confirm that is working ... [MENTION=5074219]NaturalBornCamper[/MENTION] if you have the time and are in the mood to modify the first page guide or make a better tutorial with imgs and stuff, using this method, please feel free to use whatever needed from this post. This method should work, I tested 5 times and worked every time ... no bugs and bootloops provided you take every step posted by me above. Also my black theme got lost while flashing / reflashing and needs to be done again (no biggie) ... but I still can not get the updater-script / binaries to work with our phone. When flashing custom update.zip using auto updater script made from several kitchens all I get are those weird bootloops I was talking about earlier ... in the end I'll get it to work but I need some more time.

If anyone wants to test the 6GB + 0.1G partitions from needrom, please do so USING THE scatter I attached and run checksum.exe before flashing and AFTER replacing EBR1 and EBR2 in the folder. For me the 6gb ended in stuck at boot logo and after 2 tries I gave up.

all the credits for all this go to the guys mentioned in the FIRST POST on the FIRST PAGE of this thread !! I just used their work to make it simple for a noob like me to root / repartition the phone.

USE THE SCATTER FILE, EBRs and RECOVERY ATTACHED HERE !!!!

download link for r21 android lollipop 5.0, doogee titans2 dg700 - official untouched from doogee.cc: https://mega.nz/#!Zo4BmCqD!Ufe8y737jBchBjdFuNf7nQ8ZC_beQtlxXxFosk2giJQ (it seems that doogee forgot to repost the r21 after redesigning their site ... or at least I could not find it anymore on their support section)

attached files:

DG700_R24_goodies.zip contains

ebr1 - 4g

ebr2 - 2g

scatter file

checksum

checksum.exe (should be runned after changing/replacing files in the folder)

recovery.img (TWRP)